Artikel Biologi kelas 12 ni membahas mengenai salah satu jenis pembelahan sel, yaitu pembelahan mitosis. Yuk simak selengkapnya mulai dari pengertian, fungsi, ciri-ciri, hingga macam-macam tahapannya!
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Pernahkah kamu mengamati persamaan ciri atau sifat antara kamu dengan orang tuamu? Entah itu bentuk mata, hidung, rambut, atau warna kulit. Kalau kamu perhatikan, setidaknya ada satu ciri atau sifat yang sama, loh. Kenapa bisa begitu?
Setiap anak atau individu pasti memiliki ciri atau sifat yang mirip, bahkan sama dengan orang tuanya. Hal ini karena adanya ciri-ciri atau sifat-sifat yang diwariskan dari orang tua kepada anak-anaknya. Nah, pewarisan sifat dari orang tua kepada keturunannya ini disebut dengan istilah hereditas.
Proses pewarisan sifat tidak terlepas dari peran dua macam peristiwa pembelahan sel, yaitu mitosis dan meiosis. Sel-sel anak hasil pembelahan mitosis dan meiosis akan mempunyai DNA yang di dalamnya terdapat materi genetik dari sel induk, bisa sama persis atau gabungan dari kedua sifat sel induknya.
Nah, kali ini, kita akan bahas mengenai pembelahan sel mitosis beserta tahapannya, ya. Kamu bisa baca materi tentang meiosis di artikel ‘Belajar Proses Pembelahan Meiosis, Yuk!‘, ya. So, stay tune aja di blog Ruangguru untuk update-an selanjutnya!
Owkey? (sumber: giphy.com)
Pembelahan sel mitosis adalah peristiwa pembelahan sel yang menghasilkan dua sel anak dengan jumlah kromosom yang sama seperti sel induknya.
Pembelahan mitosis hanya terjadi pada sel eukariotik, sedangkan sel prokariotik tidak dapat melakukannya. Kenapa? Alasannya karena sel prokariotik tidak memiliki nukleus (inti sel), membran inti sel, dan mitokondria, sedangkan mitosis memerlukan organel-organel tersebut.
Proses pembelahan mitosis terjadi di semua sel-sel tubuh (somatis), kecuali sel-sel kelamin (gamet). Pada tumbuhan, pembelahan mitosis terjadi di jaringan meristem, seperti ujung akar dan ujung tunas batang.
Pembelahan mitosis berfungsi untuk pertumbuhan sel tubuh, mengganti sel-sel tubuh yang rusak (regenerasi), dan mempertahankan jumlah kromosom.
Baca Juga: Apa Itu Sel? Kenali Jenis & Strukturnya, Yuk!
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Ciri-Ciri Pembelahan Mitosis
Pembelahan sel mitosis memiliki ciri-ciri khusus. Nah, karakteristik yang menunjukkan terjadinya pembelahan sel secara mitosis adalah:
- Proses pembelahan mitosis berlangsung di sel-sel tubuh (somatis).
- Menghasilkan dua sel anakan yang sifatnya identik dengan sel induknya.
- Terdiri dari 4 fase, yaitu profase, metafase, anafase, dan telofase.
- Sel anak memiliki jumlah kromosom yang sama dengan jumlah kromosom induknya, serta sel anak mampu untuk membelah lagi.
- Pada usia muda, dewasa, dan tua, pembelahan mitosis dapat terjadi.
Proses Pembelahan Mitosis
Terdapat empat fase (tahap) pembelahan mitosis, di antaranya profase, metafase, anafase, dan telofase. Tapi, sebelum keempat fase dalam pembelahan sel ini dimulai, ada yang namanya fase pendahuluan atau interfase.
Interfase ini juga sering disebut dengan persiapan pembelahan sel. Nah, supaya kamu semakin paham, langsung aja yuk kita simak pembahasannya berikut ini!
1. Interfase
Pada interfase, terjadi proses persiapan dan penimbunan energi oleh sel untuk melakukan pembelahan. Kamu tahu nggak nih, proses ini memerlukan waktu yang sangat lama dibanding fase lainnya, loh.
Selama interfase, inti sel (nukleus) dan anak inti sel (nukleolus) tampak terlihat jelas. Namun, kromosom pada sel tidak terlihat karena masih dalam bentuk kromatin, yaitu benang-benang halus yang tersusun atas molekul DNA, RNA, dan protein.
Di bagian luar inti sel terdapat sentrosom, yaitu organel sel yang berfungsi untuk mempertahankan jumlah kromosom antara sel induk dan sel anak agar tetap sama selama pembelahan sel. Nah, kalau pada sel hewan, setiap sentrosom akan mengandung sepasang sentriol yang berbentuk seperti badan silindris kecil.
Baca Juga: 9 Macam Organel Sel Tumbuhan dan Sel Hewan serta Fungsinya
Tahap interfase terbagi menjadi tiga, yaitu fase G1 (gap pertama), fase S (sintesis), dan fase G2 (gap kedua).
- Fase G1 disebut juga dengan fase pertumbuhan dan perkembangan sel. Hal ini ditandai dengan berkembangnya sitoplasma (cairan sel), organel sel, serta sintesis bahan-bahan yang akan digunakan untuk fase berikutnya, yaitu fase S.
- Pada fase S, terjadi replikasi atau duplikasi DNA sebagai materi genetik yang akan diturunkan kepada sel anak, sehingga nantinya akan dihasilkan dua salinan DNA.
- Fase terakhir, yaitu fase G2, replikasi DNA telah selesai. Terjadi peningkatan sintesis protein sebagai tahap akhir persiapan sel untuk melakukan pembelahan.
2. Profase
Selanjutnya, kita masuk ke tahap awal pembelahan sel, yaitu tahap profase. Pada awal profase, sentrosom mengalami replikasi, sehingga menghasilkan dua sentrosom. Kemudian, setiap sentrosom akan bergerak ke kutub-kutub inti sel yang letaknya berlawanan.
Di saat yang bersamaan, mikrotubulus mulai terlihat di antara dua sentrosom. Mikrotubulus ini merupakan serat protein panjang yang memanjang dari sentriol ke segala arah. Lama-kelamaan, mikrotubulus akan membentuk seperti gulungan benang yang bisa kita sebut dengan benang-benang spindel.
Di tahap pembelahan sel ini juga, benang-benang kromatin mulai mengalami penebalan yang kemudian membentuk kromosom. Nah, kromosom ini terdiri dari dua kromatid identik yang terikat pada sentromer.
Setiap sentromer memiliki dua kinetokor yang merupakan formasi protein dan menjadi tempat melekatnya benang-benang spindel nantinya.
Di akhir tahap profase, nukleolus dan membran inti sel mulai menghilang. Selain itu, sentrosom telah sampai di kutubnya masing-masing. Benang-benang spindel pun akan membentang dari kutub satu ke kutub yang lain.
Benang spindel ini nantinya akan berperan untuk menarik kromosom ke bagian tengah inti sel di tahap selanjutnya.
3. Metafase
Pada tahap pembelahan sel ini, nukleus dan membran inti sel sudah tidak terlihat. Masing-masing kinetokor pada sentromer dihubungkan ke satu sentrosom oleh benang-benang spindel. Kemudian, pasangan kromatid bergerak ke bagian tengah sel (bidang ekuator) dan membentuk lempeng metafase.
Posisi kromosom yang terletak pada bagian tengah sel ini membuat jumlah kromosom dapat dihitung dengan tepat dan bentuk kromosom juga dapat diamati dengan jelas.
Baca Juga: Struktur Sel Tumbuhan & Hewan beserta Fungsinya
4. Anafase
Tahap anafase ditandai dengan pemisahan kromatid dari bagian sentromer yang kemudian membentuk kromosom baru. Masing-masing kromosom ditarik oleh benang-benang spindel menuju kutub yang berlawanan.
Jumlah kromosom yang menuju ke kutub yang satu akan sama dengan jumlah kromosom yang menuju ke kutub lainnya.
Nah, pada tahap akhir anafase, kromosom hampir sampai ke kutubnya masing-masing. Selain itu, sitokinesis juga mulai terjadi. Apa itu sitokinesis?
Sitokinesis merupakan fase pembelahan atau pemisahan sitoplasma, organel, dan membran selular. Pembelahan ini dimulai dari luar sel (membran sel) menuju ke bagian tengah sel, sehingga akan menghasilkan dua sel yang disebut sel anak.
5. Telofase
Selanjutnya, kita sudah masuk ke tahap akhir pembelahan sel mitosis, nih, yaitu tahap telofase. Pada tahap ini, kromosom telah sampai di kutubnya masing-masing.
Benang-benang spindel mulai menghilang dan membran inti sel juga mulai terbentuk di antara dua kelompok kromosom yang terpisah. Kromosom semakin lama akan menipis dan berubah menjadi benang-benang kromatin kembali.
Kemudian, sitokinesis telah selesai. Sel telah membelah dan menghasilkan dua sel anak dengan kromosom diploid (2n). Nah, kalau kita lihat proses pembelahan mitosis ini secara keseluruhan, maka akan seperti ini, nih.
Oke, selesai sudah bahasan kita mengenai tahap-tahap pembelahan sel mitosis. Wah, menarik sekali, ya! Semoga kamu paham dengan materi kali ini. Oh iya, kamu bisa belajar materi mitosis secara lengkap di ruangbelajar juga, loh.
Pastinya bakal lebih asik dan menyenangkan. Kenapa? Karena kamu akan dipandu oleh para Master Teachers yang cara mengajarnya bikin kamu mudah paham terhadap materi. Nggak percaya? Cobain aja!
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<h1 class="content-title">
Pengertian & Tahap-Tahap Pembelahan Sel Mitosis | Biologi Kelas 12 </h1>
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<p class="content-author"><a href="https://www.ruangguru.com/blog/author/hani-ammariah" class="">Hani Ammariah</a> </p>
<p class="content-info"><span>October 20, 2025 • </span> <span>6 minutes read</span></p>
<br />
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<p style="text-align: justify;"><img fetchpriority="high" decoding="async" style="height: auto; max-width: 100%; width: 820px; margin-left: auto; margin-right: auto; display: block;" src="https://cdn-web.ruangguru.com/landing-pages/assets/hs/BIO12%20-%20Tahap%20Pembelahan%20Mitosis-01.jpg" alt="Tahap Pembelahan Mitosis" width="820" height="410" /></p>
<blockquote>
<p style="text-align: center;"><em><a style="font-weight: bold;" href="https://www.ruangguru.com/blog/c/biologi/biologi-sma-kelas-12" rel="noopener">Artikel Biologi kelas 12</a> ni membahas mengenai salah satu jenis pembelahan sel, yaitu pembelahan mitosis. Yuk simak selengkapnya mulai dari pengertian, fungsi, ciri-ciri, hingga macam-macam tahapannya!</em></p>
</blockquote>
<p style="text-align: center;"><span style="color: #000000;"><em>—</em></span></p>
<p> </p>
<p style="text-align: justify;">Pernahkah kamu mengamati persamaan ciri atau sifat antara kamu dengan orang tuamu? Entah itu bentuk mata, hidung, rambut, atau warna kulit. Kalau kamu perhatikan, setidaknya ada satu ciri atau sifat yang sama, <em>loh</em>. Kenapa bisa begitu?</p>
<p style="text-align: justify;">Setiap anak atau individu pasti memiliki ciri atau sifat yang mirip, bahkan sama dengan orang tuanya. Hal ini karena adanya ciri-ciri atau sifat-sifat yang diwariskan dari orang tua kepada anak-anaknya. Nah, <a style="font-weight: bold;" href="/blog/konsep-pewarisan-sifat-pada-makhluk-hidup" rel="noopener">pewarisan sifat dari orang tua kepada keturunannya</a> ini disebut dengan istilah <strong>hereditas</strong>.</p>
<p style="text-align: justify;">Proses pewarisan sifat tidak terlepas dari peran dua macam peristiwa pembelahan sel, yaitu mitosis dan meiosis. Sel-sel anak hasil pembelahan mitosis dan meiosis akan mempunyai DNA yang di dalamnya terdapat materi genetik dari sel induk, bisa sama persis atau gabungan dari kedua sifat sel induknya.</p>
<p style="text-align: justify;">Nah, kali ini, kita akan bahas mengenai pembelahan sel mitosis beserta tahapannya, ya. Kamu bisa baca materi tentang meiosis di artikel ‘<a style="font-weight: bold;" href="/blog/biologi-kelas-12-apa-itu-meiosis" rel="noopener">Belajar Proses Pembelahan Meiosis, Yuk!</a>‘, ya. <em>So</em>, <em>stay tune</em> <em>aja</em> di blog Ruangguru untuk <em>update</em>-an selanjutnya!</p>
<p style="text-align: justify;"><img decoding="async" style="width: 600px; display: block; margin: 0px auto; height: auto; max-width: 100%;" src="https://cdn-web.ruangguru.com/landing-pages/assets/hs/giphy%20(37)-1.gif" alt="mitosis" width="600" height="338" /><i></i></p>
<p style="text-align: center;">Owkey? (sumber: giphy.com)</p>
<p> </p>
<h2 style="text-align: justify;"><span style="font-size: 18pt;">Pengertian Mitosis</span></h2>
<p style="text-align: justify;"><strong>Pembelahan sel mitosis</strong> <span style="font-weight: bold;">adalah peristiwa pembelahan sel yang menghasilkan dua sel anak dengan jumlah </span><a style="font-weight: bold;" href="/blog/biologi-kelas-12-mengenal-gen-dna-dan-kromosom" rel="noopener">kromosom</a> <span style="font-weight: bold;">yang sama seperti sel induknya</span>.</p>
<p style="text-align: justify;">Pembelahan mitosis <span style="font-weight: normal;">hanya terjadi pada sel eukariotik</span>, sedangkan <span style="font-weight: normal;">sel prokariotik</span> tidak dapat melakukannya. Kenapa? Alasannya karena sel prokariotik tidak memiliki nukleus (inti sel), membran inti sel, dan <span style="font-weight: normal;">mitokondria</span>, sedangkan mitosis memerlukan organel-organel tersebut.</p>
<p style="text-align: justify;">Proses <span style="font-weight: bold;">pembelahan mitosis terjadi di semua</span> <strong>sel-sel tubuh (somatis)</strong>, kecuali sel-sel kelamin (gamet). Pada tumbuhan, pembelahan mitosis terjadi di <a style="font-weight: bold;" href="/blog/5-jenis-jaringan-pada-tumbuhan-beserta-fungsinya" rel="noopener">jaringan meristem</a>, seperti ujung akar dan ujung tunas batang.</p>
<p style="text-align: justify;">Pembelahan mitosis <span style="font-weight: bold;">berfungsi</span> untuk pertumbuhan sel tubuh, mengganti sel-sel tubuh yang rusak (regenerasi), dan mempertahankan jumlah kromosom.</p>
<p style="text-align: justify; font-weight: bold;">Baca Juga: <a href="/blog/mengenal-jenis-dan-struktur-sel-pada-makhluk-hidup" target="_blank" rel="noopener">Apa Itu Sel? Kenali Jenis & Strukturnya, Yuk!</a></p>
<p style="text-align: center;">—</p>
<p style="text-align: justify;"><em>Sudah tahu belum, di Aplikasi belajar Ruangguru, ada fitur Drill Soal yang berisi kumpulan contoh soal latihan beserta pembahasannya, loh. Pas banget kan buat mempersiapkan diri kamu dalam menghadapi ujian nanti. Yuk, klik banner di bawah ini untuk coba fitur Drill Soal!</em></p>
<p style="text-align: justify;"><a href="https://link.ruangguru.com/blPk/drillsoal6"><img decoding="async" class="aligncenter size-medium" src="https://roboguru-forum-cdn.ruangguru.com/image/c2c1718a-346a-471a-b761-b0a50adcfa50.png" alt="Fitur Drill Soal Ruangguru" /></a></p>
<p> </p>
<h2 style="text-align: justify;"><span style="font-size: 18pt;">Ciri-Ciri Pembelahan Mitosis</span></h2>
<p style="text-align: justify; font-size: 16px; font-weight: normal;">Pembelahan sel mitosis memiliki ciri-ciri khusus. Nah, karakteristik yang menunjukkan terjadinya pembelahan sel secara mitosis adalah:</p>
<ol style="text-align: justify;">
<li style="text-align: justify; font-size: 16px; font-weight: normal;">Proses pembelahan mitosis berlangsung di sel-sel tubuh (somatis).</li>
<li style="text-align: justify; font-size: 16px; font-weight: normal;">Menghasilkan dua sel anakan yang sifatnya identik dengan sel induknya.</li>
<li style="text-align: justify; font-size: 16px; font-weight: normal;">Terdiri dari 4 fase, yaitu profase, metafase, anafase, dan telofase.</li>
<li style="text-align: justify; font-size: 16px; font-weight: normal;">Sel anak memiliki jumlah kromosom yang sama dengan jumlah kromosom induknya, serta sel anak mampu untuk membelah lagi.</li>
<li style="text-align: justify; font-size: 16px; font-weight: normal;">Pada usia muda, dewasa, dan tua, pembelahan mitosis dapat terjadi.</li>
</ol>
<p> </p>
<h2 style="text-align: justify;"><span style="font-size: 18pt;">Proses Pembelahan Mitosis</span></h2>
<p style="text-align: justify;">Terdapat <strong>empat fase (tahap) pembelahan mitosis</strong><span style="font-weight: bold;">,</span> <span style="font-weight: bold;">di antaranya profase, metafase, anafase, dan telofase</span>. Tapi, sebelum keempat fase dalam pembelahan sel ini dimulai, ada yang namanya fase pendahuluan atau interfase.</p>
<p style="text-align: justify;"><span style="font-weight: normal;">Interfase </span>ini juga sering disebut dengan persiapan pembelahan sel. <i>Nah</i>, supaya kamu semakin paham, langsung <i>aja</i> <i>yuk</i> kita simak pembahasannya berikut ini!</p>
<p> </p>
<h3 style="text-align: justify;"><span style="font-size: 14pt;">1. Interfase</span></h3>
<p style="text-align: justify;">Pada interfase, terjadi <span style="font-weight: bold;">proses p</span><strong>ersiapan dan penimbunan energi</strong> oleh sel untuk melakukan pembelahan. Kamu tahu <i>nggak nih</i>, proses ini memerlukan waktu yang sangat lama dibanding fase lainnya, <em>loh</em>.</p>
<p style="text-align: justify;">Selama interfase, inti sel (nukleus) dan anak inti sel (nukleolus) tampak terlihat jelas. Namun, <span style="font-weight: normal;">kromosom </span>pada sel tidak terlihat karena masih dalam bentuk <span style="font-weight: normal;">kromatin</span>, yaitu benang-benang halus yang tersusun atas molekul DNA, RNA, dan protein.</p>
<p style="text-align: justify;">Di bagian luar inti sel terdapat <strong>sentrosom</strong>, yaitu organel sel yang berfungsi untuk mempertahankan jumlah kromosom antara sel induk dan sel anak agar tetap sama selama pembelahan sel. <i>Nah</i>, kalau pada sel hewan, setiap sentrosom akan mengandung sepasang <strong>sentriol</strong> yang berbentuk seperti badan silindris kecil.</p>
<p style="text-align: justify;"><strong><span style="font-size: 16px;">Baca Juga: <a href="/blog/organel-sel-dan-fungsinya" target="_blank" rel="noopener">9 Macam Organel Sel Tumbuhan dan Sel Hewan serta Fungsinya</a></span></strong></p>
<p style="text-align: justify;"><img decoding="async" style="height: auto; max-width: 100%; width: 600px; margin-left: auto; margin-right: auto; display: block;" src="https://cdn-web.ruangguru.com/landing-pages/assets/hs/BIO12%20-%20Tahap%20Pembelahan%20Mitosis-03.jpg" alt="Biologi Kelas 12 - Tahap Pembelahan Mitosis - Interfase" width="600" height="400" /></p>
<p> </p>
<p style="text-align: justify;"><strong>Tahap interfase terbagi menjadi tiga</strong>, yaitu fase G1 (gap pertama), fase S (sintesis), dan fase G2 (gap kedua).</p>
<ul style="text-align: justify;">
<li>Fase G1 disebut juga dengan <strong>fase pertumbuhan dan perkembangan sel</strong>. Hal ini ditandai dengan berkembangnya sitoplasma (cairan sel), organel sel, serta sintesis bahan-bahan yang akan digunakan untuk fase berikutnya, yaitu fase S.</li>
<li>Pada fase S, terjadi <strong>replikasi atau duplikasi DNA</strong> sebagai materi genetik yang akan diturunkan kepada sel anak, sehingga nantinya akan dihasilkan dua salinan DNA.</li>
<li>Fase terakhir, yaitu fase G2, replikasi DNA telah selesai. Terjadi <strong style="font-size: 16px;">peningkatan sintesis protein</strong><span style="font-size: 16px;"> sebagai tahap akhir persiapan sel untuk melakukan pembelahan.</span></li>
</ul>
<p> </p>
<h3 style="text-align: justify;"><span style="font-size: 14pt;">2. Profase</span></h3>
<p style="text-align: justify;">Selanjutnya, kita masuk ke tahap awal pembelahan sel, yaitu tahap profase. Pada awal profase, <strong>sentrosom mengalami replikasi</strong>, sehingga menghasilkan dua sentrosom. Kemudian, <strong>setiap sentrosom akan bergerak ke kutub-kutub inti sel yang letaknya berlawanan</strong>.</p>
<p style="text-align: justify;">Di saat yang bersamaan, <strong>mikrotubulus mulai terlihat di antara dua sentrosom</strong>. Mikrotubulus ini merupakan serat protein panjang yang memanjang dari sentriol ke segala arah. Lama-kelamaan, mikrotubulus akan membentuk seperti gulungan benang yang bisa kita sebut dengan <strong>benang-benang spindel</strong>.</p>
<p style="text-align: justify;">Di tahap pembelahan sel ini juga, benang-benang kromatin mulai mengalami penebalan yang kemudian membentuk <strong>kromosom</strong>. <i>Nah</i>, kromosom ini terdiri dari dua kromatid identik yang terikat pada <strong>sentromer</strong>.</p>
<p style="text-align: justify;">Setiap sentromer memiliki dua kinetokor yang merupakan formasi protein dan menjadi tempat melekatnya benang-benang spindel nantinya.</p>
<p style="text-align: justify;"><img loading="lazy" decoding="async" style="height: auto; max-width: 100%; width: 600px; margin-left: auto; margin-right: auto; display: block;" src="https://cdn-web.ruangguru.com/landing-pages/assets/hs/BIO12%20-%20Tahap%20Pembelahan%20Mitosis-04%20(1).jpg" alt="Biologi Kelas 12 - Tahap Pembelahan Mitosis - Profase" width="600" height="600" /></p>
<p> </p>
<p style="text-align: justify;">Di akhir tahap profase, <strong>nukleolus dan membran inti sel mulai menghilang</strong>. Selain itu, <strong>sentrosom telah sampai di kutubnya masing-masing</strong>. Benang-benang spindel pun akan membentang dari kutub satu ke kutub yang lain.</p>
<p style="text-align: justify;">Benang spindel ini nantinya akan berperan untuk menarik kromosom ke bagian tengah inti sel di tahap selanjutnya.</p>
<p> </p>
<h3 style="text-align: justify;"><span style="font-size: 14pt;">3. Metafase</span></h3>
<p style="text-align: justify;">Pada tahap pembelahan sel ini, <strong>nukleus dan membran inti sel sudah tidak terlihat</strong>. Masing-masing kinetokor pada sentromer dihubungkan ke satu sentrosom oleh benang-benang spindel. Kemudian, <strong>pasangan kromatid bergerak ke bagian tengah sel</strong> (bidang ekuator) dan membentuk lempeng metafase.</p>
<p style="text-align: justify;">Posisi kromosom yang terletak pada bagian tengah sel ini membuat jumlah kromosom dapat dihitung dengan tepat dan bentuk kromosom juga dapat diamati dengan jelas.</p>
<p style="text-align: justify;"><img loading="lazy" decoding="async" style="height: auto; max-width: 100%; width: 600px; margin-left: auto; margin-right: auto; display: block;" src="https://cdn-web.ruangguru.com/landing-pages/assets/hs/BIO12%20-%20Tahap%20Pembelahan%20Mitosis-05%20(1).jpg" alt="Tahap Pembelahan Mitosis - Metafase" width="600" height="400" /></p>
<p style="font-weight: bold; text-align: justify;">Baca Juga: <a href="/blog/biologi-kelas-11-struktur-sel-dan-fungsinya" target="_blank" rel="noopener">Struktur Sel Tumbuhan & Hewan beserta Fungsinya</a></p>
<p> </p>
<h3 style="text-align: justify;"><span style="font-size: 14pt;">4. Anafase</span></h3>
<p style="text-align: justify;">Tahap anafase ditandai dengan <strong>pemisahan kromatid dari bagian sentromer </strong>yang kemudian membentuk kromosom baru. <strong>Masing-masing kromosom ditarik oleh benang-benang spindel menuju kutub yang berlawanan</strong>.</p>
<p style="text-align: justify;">Jumlah kromosom yang menuju ke kutub yang satu akan sama dengan jumlah kromosom yang menuju ke kutub lainnya.</p>
<p style="text-align: justify;"><i>Nah</i>, pada tahap akhir anafase, <strong>kromosom hampir sampai ke kutubnya masing-masing</strong>. Selain itu, <strong>sitokinesis juga mulai terjadi</strong>. Apa itu sitokinesis?</p>
<p style="text-align: justify;"><strong>Sitokinesis</strong> merupakan fase pembelahan atau pemisahan sitoplasma, organel, dan membran selular. Pembelahan ini dimulai dari luar sel (membran sel) menuju ke bagian tengah sel, sehingga akan menghasilkan dua sel yang disebut <strong>sel anak</strong>.</p>
<p style="text-align: justify;"><img loading="lazy" decoding="async" style="height: auto; max-width: 100%; width: 600px; margin-left: auto; margin-right: auto; display: block;" src="https://cdn-web.ruangguru.com/landing-pages/assets/hs/BIO12%20-%20Tahap%20Pembelahan%20Mitosis-07.jpg" alt="Tahap Pembelahan Mitosis - Anafase" width="600" height="400" /></p>
<p> </p>
<h3 style="text-align: justify;"><span style="font-size: 14pt;">5. Telofase</span></h3>
<p style="text-align: justify;">Selanjutnya, kita sudah masuk ke tahap akhir pembelahan sel mitosis, <i>nih</i>, yaitu tahap telofase. Pada tahap ini, <strong>kromosom telah sampai di kutubnya masing-masing</strong>.</p>
<p style="text-align: justify;"><strong>Benang-benang spindel mulai menghilang dan membran inti sel juga mulai terbentuk</strong> di antara dua kelompok kromosom yang terpisah. Kromosom semakin lama akan menipis dan berubah menjadi benang-benang kromatin kembali.</p>
<p style="text-align: justify;"><img loading="lazy" decoding="async" style="height: auto; max-width: 100%; width: 600px; margin-left: auto; margin-right: auto; display: block;" src="https://cdn-web.ruangguru.com/landing-pages/assets/hs/BIO12%20-%20Tahap%20Pembelahan%20Mitosis-06.jpg" alt="Tahap Pembelahan Mitosis - Telofase" width="600" height="400" /></p>
<p> </p>
<p style="text-align: justify;">Kemudian, sitokinesis telah selesai. Sel telah membelah dan menghasilkan dua sel anak dengan kromosom diploid (2n). Nah, kalau kita lihat proses pembelahan mitosis ini secara keseluruhan, maka akan seperti ini, nih.</p>
<p style="text-align: justify;"><img loading="lazy" decoding="async" style="height: auto; max-width: 100%; width: 600px; margin-left: auto; margin-right: auto; display: block;" src="https://cdn-web.ruangguru.com/landing-pages/assets/hs/BIO12%20-%20Tahap%20Pembelahan%20Mitosis-08%20(1).jpg" alt="Proses Pembelahan Mitosis" width="600" height="600" /></p>
<p> </p>
<p style="text-align: justify;"><span style="font-style: normal;">Oke, selesai sudah bahasan kita mengenai tahap-tahap pembelahan sel mitosis. </span>Wah, menarik sekali, ya! Semoga kamu paham dengan materi kali ini. Oh iya, kamu bisa belajar materi mitosis secara lengkap di <a style="font-weight: bold;" href="https://www.ruangguru.com/ruangbelajar" target="_blank" rel="noopener">ruangbelajar</a> juga, loh.</p>
<p style="text-align: justify;">Pastinya bakal lebih asik dan menyenangkan. Kenapa? Karena kamu akan dipandu oleh para Master Teachers yang cara mengajarnya bikin kamu mudah paham terhadap materi. Nggak percaya? Cobain aja!</p>
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<img src="https://cdn-web-2.ruangguru.com/static/appstore.png" loading="lazy" alt="Button App Store Footer " />
</a>
</li>
<li>
<a target="_blank" rel="nofollow" href="https://play.google.com/store/apps/details?id=com.ruangguru.livestudents&hl=in">
<img src="https://cdn-web-2.ruangguru.com/static/googleplay.png" loading="lazy" alt="Button Google Play Footer " />
</a>
</li>
<li>
<a target="_blank" rel="nofollow" href="https://appgallery.huawei.com/#/app/C102352375">
<img src="https://cdn-web-2.ruangguru.com/static/huawei.png" loading="lazy" alt="Button AppGallery Footer " />
</a>
</li>
</ul>
</div>
</nav>
</div>
</div>
</div>
</div>
<div class="d-lg-none text-center">
<nav class="footer-menu social">
<p class="title">Ikuti Kami</p>
<a target="_blank" href="https://www.instagram.com/ruangguru/">
<picture>
<source srcset="https://cdn-web-2.ruangguru.com/static/instagram.png?height=60&convert=webp" type="image/webp">
<source srcset="https://cdn-web-2.ruangguru.com/static/instagram.png?height=60" type="image/png">
<img src="https://cdn-web-2.ruangguru.com/static/instagram.png" loading="lazy" alt="Logo Instagram Footer" width="32px" height="32px" />
</picture>
</a>
<a target="_blank" href="https://www.facebook.com/ruanggurucom/">
<picture>
<source srcset="https://cdn-web-2.ruangguru.com/static/facebook.png?height=60&convert=webp" type="image/webp">
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<img src="https://cdn-web-2.ruangguru.com/static/facebook.png" loading="lazy" alt="Logo Facebook Footer" width="32px" height="32px" />
</picture>
</a>
<a target="_blank" href="https://twitter.com/ruangguru/">
<picture>
<source srcset="https://cdn-web-2.ruangguru.com/static/twitter.png?height=60&convert=webp" type="image/webp">
<source srcset="https://cdn-web-2.ruangguru.com/static/twitter.png?height=60" type="image/png">
<img src="https://cdn-web-2.ruangguru.com/static/twitter.png" loading=" lazy" alt="Logo Twitter Footer" width="32px" height="32px" />
</picture>
</a>
<a target="_blank" href="https://www.youtube.com/ruangguru">
<picture>
<source srcset="https://cdn-web-2.ruangguru.com/static/youtube.png?height=60&convert=webp" type="image/webp">
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<img src="https://cdn-web-2.ruangguru.com/static/youtube.png" loading=" lazy" alt="Logo Youtube Footer" width="32px" height="32px" />
</picture>
</a>
<a target="_blank" href="https://www.linkedin.com/company/ruangguru-com">
<picture>
<source srcset="https://cdn-web-2.ruangguru.com/static/linkedin.png?height=60&convert=webp" type="image/webp">
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<img src="https://cdn-web-2.ruangguru.com/static/linkedin.png" loading=" lazy" alt="Logo LinkedIn Footer" width="32px" height="32px" />
</picture>
</a>
<a target="_blank" href="https://www.tiktok.com/@ruangguru">
<picture>
<source srcset="https://cdn-web-2.ruangguru.com/static/tiktok.png?height=60&convert=webp" type="image/webp">
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<img src="https://cdn-web-2.ruangguru.com/static/tiktok.png" loading=" lazy" alt="Logo TikTok Footer" width="32px" height="32px" />
</picture>
</a>
</nav>
</div>
<p class="footer-copyright">
© 2026 All Rights Reserved PT. Ruang Raya Indonesia
</p>
</div>
<style>
.bantuan-container {
position: relative;
}
.bantuan-element {
position: fixed;
z-index: 999;
display: flex;
align-items: flex-end;
justify-content: flex-end;
cursor: pointer;
transition: all 0.6s ease;
}
.bantuan-top {
bottom: 11rem;
right: 2rem;
}
.bantuan-bottom {
bottom: 2rem;
right: 2rem;
}
.bantuan-top-2 {
bottom: 15rem;
right: 2rem;
}
.bantuan-top-3 {
bottom: 19rem;
right: 2rem;
}
.bantuan-bottom-2 {
bottom: 5rem;
right: 2rem;
}
.bantuan-bottom-3 {
bottom: 8rem;
right: 2rem;
}
@media (min-width: 768px) {
.bantuan-element img {
width: auto;
transition: all 0.4s ease;
}
.bantuan-top img {
width: 140px;
}
.bantuan-bottom img {
width: 140px;
}
.bantuan-top-2 img,
.bantuan-top-3 img {
width: 140px;
}
.bantuan-bottom-2 img,
.bantuan-bottom-3 img {
width: 140px;
}
.bantuan-element.clicked {
bottom: 9rem;
right: 2.5rem;
}
.bantuan-element.clicked img {
width: auto;
height: 64px;
}
}
@media (max-width: 767px) {
.bantuan-top {
bottom: 8rem;
right: 1rem;
align-items: center;
}
.bantuan-bottom {
bottom: 2rem;
right: 1.25rem;
align-items: center;
}
.bantuan-top-2 {
bottom: 12rem;
right: 1rem;
align-items: center;
}
.bantuan-top-3 {
bottom: 16rem;
right: 1rem;
align-items: center;
}
.bantuan-bottom-2 {
bottom: 5rem;
right: 1.25rem;
align-items: center;
}
.bantuan-bottom-3 {
bottom: 8rem;
right: 1.25rem;
align-items: center;
}
.bantuan-element img {
width: auto;
}
.bantuan-top img,
.bantuan-top-2 img,
.bantuan-top-3 img {
width: 96px;
}
.bantuan-bottom img,
.bantuan-bottom-2 img,
.bantuan-bottom-3 img {
width: 96px;
}
}
.bantuan-element:hover {
transform: scale(1.05);
}
.bantuan-element img {
max-width: 100%;
height: auto;
}
</style>
<div id="bantuan-divs-container" style="position: relative" data-product="ruangguru" data-table="rg_floating_icon"></div>
<script>
class FloatingDivsComponent {
constructor(product = 'ruangguru', table = 'rg_floating_icon') {
this.container = document.getElementById('bantuan-divs-container');
this.floatingElements = [];
this.product = product;
this.table = table;
// Configuration
this.config = {
baseApiUrl: 'https://gw.ruangguru.com/api/v3/rdb/p_ddgy8hjx5dxsqx/rg_banner/views/',
apiKey: 'vLyK3dJrDBRmOwueX2OJXibMkgsUbBk0WS4ua2p1',
maxElements: 2,
zIndexBase: 100,
};
// Build dynamic API URL based on table parameter
this.config.apiUrl = this.buildApiUrl();
this.init();
}
buildApiUrl() {
const baseUrl = this.config.baseApiUrl;
const tableName = this.table || 'rg_floating_icon';
const queryParams =
'offset=0&limit=99999&sort=rankPosition&where=(type,eq,floating)~and(showIn,anyof,blog)~and(hide,is,false)~and(product,eq,' +
this.product +
')&nested%5Bcta%5D%5Bfields%5D=Id,name,ctaId,imageUrl,ctaLink,targetUrl';
return `${baseUrl}${tableName}?${queryParams}`;
}
async init() {
try {
await this.fetchFloatingElements();
this.renderFloatingElements();
} catch (error) {
console.error('Failed to initialize floating divs component:', error);
}
}
async fetchFloatingElements() {
try {
const options = {
method: 'GET',
headers: {
'xc-token': this.config.apiKey || 'vLyK3dJrDBRmOwueX2OJXibMkgsUbBk0WS4ua2p1',
},
};
const urlNoco = this.config.apiUrl;
const response = await fetch(urlNoco, options);
if (!response.ok) {
throw new Error(`HTTP error! status: ${response.status}`);
}
const data = await response.json();
this.floatingElements = this.processApiResponse(data);
} catch (error) {
console.error('Error fetching floating elements:', error);
throw error;
}
}
processApiResponse(data) {
if (!data || !data.list || !Array.isArray(data.list)) {
return [];
}
console.log(data.list);
// Ensure we only get maximum 2 elements
const limitedElements = data.list.slice(0, this.config.maxElements);
return limitedElements;
}
renderFloatingElements() {
if (!this.container || this.floatingElements.length === 0) {
return;
}
// Additional safeguard: ensure we never render more than maxElements
const elementsToRender = this.floatingElements.slice(0, this.config.maxElements);
// Clean up existing elements and their event listeners
this.cleanupExistingElements();
// Clear existing content
this.container.innerHTML = '';
elementsToRender.forEach((element, index) => {
const floatingDiv = this.createFloatingDiv(element, index);
this.container.appendChild(floatingDiv);
});
}
cleanupExistingElements() {
// Clear existing elements (no need for event listener cleanup with CSS approach)
const existingElements = this.container.querySelectorAll('[data-floating-element]');
existingElements.forEach(element => {
element.remove();
});
}
createFloatingDiv(element, index) {
const div = document.createElement('div');
const cta = element.cta[0]; // Use the first CTA
// Add data attribute for cleanup tracking
div.setAttribute('data-floating-element', 'true');
// Apply CSS classes based on rankPosition
const positionClass = this.getPositionClass(element.rankPosition, index);
div.className = `bantuan-element ${positionClass}`;
div.style.zIndex = this.config.zIndexBase + index;
// Create the link and image
const link = document.createElement('a');
link.href = 'https://cta.ruangguru.com/' + cta.ctaId || '#';
link.target = '_blank';
// Add tracking attributes
link.setAttribute('data-tracking-event-type', 'landing_page__core__item_click');
link.setAttribute(
'data-tracking-context',
JSON.stringify({
product_name: this.product,
cta_action: 'redirection',
cta_action_detail: link.href,
item_type: 'floating',
item_name: element.name || 'Floating element',
item_category: 'payment',
item_position: index,
item_serial: null,
section_type: 'floating_item',
section_position: 'body',
section_name: 'floating_item',
})
);
const img = document.createElement('img');
img.src = element.imageUrl + '?h=200&convert=webp';
img.alt = element.name || 'Floating element';
img.loading = 'lazy';
// Add click tracking
link.addEventListener('click', () => {
this.trackClick(element, cta);
});
link.appendChild(img);
div.appendChild(link);
return div;
}
getPositionClass(rankPosition, index) {
// Define positioning classes based on rankPosition
if (rankPosition === 1) {
return 'bantuan-top'; // Top position
} else if (rankPosition === 2) {
return 'bantuan-bottom'; // Bottom position
} else {
// For additional elements, distribute them evenly
return `bantuan-${index % 2 === 0 ? 'top' : 'bottom'}-${Math.floor(index / 2) + 1}`;
}
}
trackClick(element, cta) {
// Implement click tracking logic here
console.log('Floating element clicked:', {
elementId: element.Id,
elementName: cta.name,
ctaId: cta.ctaId,
targetUrl: cta.targetUrl,
});
}
// Public method to manually refresh
async refresh() {
try {
await this.fetchFloatingElements();
this.renderFloatingElements();
} catch (error) {
console.error('Failed to refresh floating elements:', error);
throw error;
}
}
// Public method to get current floating elements
getFloatingElements() {
return [...this.floatingElements];
}
}
// Initialize the component when DOM is ready
document.addEventListener('DOMContentLoaded', () => {
// Get product and table parameters from data attributes
const container = document.getElementById('bantuan-divs-container');
const product = container.getAttribute('data-product') || 'ruangguru';
const table = container.getAttribute('data-table') || 'rg_floating_icon';
new FloatingDivsComponent(product, table);
});
// Export for use in other modules if needed
if (typeof module !== 'undefined' && module.exports) {
module.exports = FloatingDivsComponent;
}
</script> <div id="wp-install-nudge" style="
position: fixed;
bottom: 0rem;
right: 0;
z-index: 999;
cursor: pointer;
"></div>
<script>
(function (w, d, s, o, f, js, fjs) {
w['Sales-Nudge-Widget'] = o; w[o] = w[o] || function () { (w[o].q = w[o].q || []).push(arguments) };
js = d.createElement(s), fjs = d.getElementsByTagName(s)[0];
js.id = o; js.src = f; js.async = 1; fjs.parentNode.insertBefore(js, fjs);
}(window, document, 'script', 'wpInstallNudge', 'https://cdn-web-2.ruangguru.com/sales-nudge/6198a95130/dist/widget.js'));
wpInstallNudge('init', { targetElementId: 'wp-install-nudge', clientTarget: 'ruangguru_blog' });
</script>
<script>
// note: disabled due to auto reload page
// var lastScrollTop = 0;
// $(window).scroll(function(event){
// var st = $(this).scrollTop();
// if (st > lastScrollTop){
// $('#wp-install-nudge').slideDown( "slow", function() {});
// } else {
// $('#wp-install-nudge').slideUp( "slow", function() {});
// }
// lastScrollTop = st;
// });
// $(document).ready(function () {
// $("#wp-install-nudge").hide();
// });
$('#wp-install-nudge').click(function(){
Analytics.track("promotion__install_nudge__click",
{
user_email: "ruangguru@blog.com",
cta_link: widgetData.dataConfig.target_link
}).catch((err) => {
console.log("tracker error", err);
});
});
</script>
</footer>
<div id="__next"></div>
<script type="speculationrules">
{"prefetch":[{"source":"document","where":{"and":[{"href_matches":"\/blog\/*"},{"not":{"href_matches":["\/blog\/wp-*.php","\/blog\/wp-admin\/*","\/blog\/wp-content\/uploads\/*","\/blog\/wp-content\/*","\/blog\/wp-content\/plugins\/*","\/blog\/wp-content\/themes\/ruangguru\/*","\/blog\/*\\?(.+)"]}},{"not":{"selector_matches":"a[rel~=\"nofollow\"]"}},{"not":{"selector_matches":".no-prefetch, .no-prefetch a"}}]},"eagerness":"conservative"}]}
</script>
<script>
async function getCtaDetails(ctaIds) {
const endpoint =
" https://gw.ruangguru.com/api/v3/rdb/p_ddgy8hjx5dxsqx/CTA/views/CTA?offset=0&limit=10&where=(ctaId,in," + ctaIds.toString() + ")";
try {
const response = await fetch(endpoint, {
headers: {
"xc-token": "-hG2nBDJzSj0agSgNtcJx97M4F02y54nUMoY6plJ",
},
});
const data = await response.json();
const ctaList = data?.list || [];
const ctaMap = new Map();
for (const ctaData of ctaList) {
ctaMap.set(ctaData.ctaId, ctaData);
}
return ctaMap;
} catch (error) {
console.error("Error fetching CTA details:", error);
return new Map();
}
}
async function replaceCTA() {
const regex = /{{cta\((‘(.*?)’|“(.*?)”)\)}}/g;
const bodyHTML = document.body.innerHTML;
const matches = Array.from(bodyHTML.matchAll(regex));
const ctaIds = matches.map((match) => {
let ctaId = match[2] ?? match[3];
return ctaId;
});
const ctaMap = await getCtaDetails(ctaIds);
const replacedHTML = bodyHTML.replace(regex, (match, _inner, ctaId1, ctaId2) => {
const ctaId = ctaId1 ?? ctaId2;
const ctaData = ctaMap.get(ctaId);
if (ctaData) {
return `<a href="https://cta.ruangguru.com/${ctaData.ctaId}" target="_${ctaData.targetType}" style="position:relative;display:inline-block;">
<img src="${ctaData.imageUrl}" loading="lazy" alt="${ctaData.altText}" />
</a>`;
} else {
return match;
}
});
document.body.innerHTML = replacedHTML;
}
</script>
<meta name="author" content="Ruangguru Tech Team">
<!-- Google Tag Manager (noscript) -->
<noscript><iframe src="https://www.googletagmanager.com/ns.html?id=GTM-PVNLZFT" height="0" width="0" style="display:none;visibility:hidden"></iframe></noscript>
<!-- Tracker -->
<script type="text/javascript" src="https://cdn-web-2.ruangguru.com/landing-page-web/public/staticpages/global-assets/js/cta.js"></script>
<script src="https://unpkg.com/@dotlottie/player-component@latest/dist/dotlottie-player.mjs" type="module"></script>
</body>
</html>