https://www.khanacademy.org/science/ap-biology/cell-communication-and-cell-cycle/cell-cycle/a/cell-cycle-phases 2021-04-29T07:59:20Z Phases of the cell cycle The cell cycle is composed of interphase (G₁, S, and G₂ phases), followed by the mitotic phase (mitosis and cytokinesis), and G₀ phase. article https://www.khanacademy.org/science/ap-biology/cell-communication-and-cell-cycle/cell-cycle/v/interphase 2023-12-04T19:02:25.924542584Z Interphase A cell spends most of its life in interphase, which has three phases: G1, S, and G2. In the G1 phase, the cell grows and takes in nutrients. In the S phase, the cell's DNA is replicated. Each replicated chromosome consists of two sister chromatids connected at the centromere. The G2 phase is another growth phase, after which the cell is ready for mitosis. Sal Khan video https://cdn.kastatic.org/googleusercontent/5cKOAL0qb8cL7pVX_f2Z_nRFhJlc_Lb9Il-srg_adRBBxpIJmncE9dDsgerAu0k-HbC0Q_E9t0mck0VckouXBvI Interphase A cell spends most of its life in interphase, which has three phases: G1, S, and G2. In the G1 phase, the cell grows and takes in nutrients. In the S phase, the cell's DNA is replicated. Each replicated chromosome consists of two sister chromatids connected at the centromere. The G2 phase is another growth phase, after which the cell is ready for mitosis. https://cdn.kastatic.org/ka-youtube-converted/VXLSTd_dlKg.mp4/VXLSTd_dlKg.mp4 508 Cell division https://www.khanacademy.org/science/ap-biology/cell-communication-and-cell-cycle/cell-cycle/v/mitosis 2023-12-04T19:02:25.924542584Z Mitosis Mitosis, a key part of the cell cycle, involves a series of stages (prophase, metaphase, anaphase, and telophase) that facilitate cell division and genetic information transmission. Centrosomes and microtubules play pivotal roles in orchestrating this complex process, ensuring the successful replication of cells. Sal Khan video https://cdn.kastatic.org/googleusercontent/TDqHqMvXm2B_9p-M1hqSnT1mRmZHzNMDGtwhJXBdf0z5rkPddF3WRsWlDXzLpz7vf2fZeOPeqJiHv3gyvXjhFsd8 Mitosis Mitosis, a key part of the cell cycle, involves a series of stages (prophase, metaphase, anaphase, and telophase) that facilitate cell division and genetic information transmission. Centrosomes and microtubules play pivotal roles in orchestrating this complex process, ensuring the successful replication of cells. https://cdn.kastatic.org/ka-youtube-converted/TKGcfbyFXsw.mp4/TKGcfbyFXsw.mp4 732 Cell division https://www.khanacademy.org/science/ap-biology/cell-communication-and-cell-cycle/cell-cycle/a/phases-of-mitosis 2026-06-25T09:10:34.765500454Z Learn: Phases of mitosis How a cell divides to make two genetically identical cells. Prophase, metaphase, anaphase, and telophase. article https://www.khanacademy.org/science/als-k-to-12-science/x46c2fc9f8e023990:2nd-quarter/x46c2fc9f8e023990:the-reproductive-system-structure-and-its-role-in-human-development/a/hs-the-cell-cycle-and-mitosis-review 2021-04-29T07:58:15Z The cell cycle and mitosis review article https://www.khanacademy.org/science/strengthened-shs-biology-1/x12d91beacfa56326:cell-biology/x12d91beacfa56326:the-cell-cycle/e/the-cell-cycle-and-mitosis-class-11-biology 2026-04-07T22:23:57.656416987Z The cell cycle and mitosis This exercise has questions on the different phases of the cell cycle and of mitosis. Moumita Sen exercise https://www.khanacademy.org/science/hs-bio/x230b3ff252126bb6:the-cell-cycle-and-differentiation/x230b3ff252126bb6:the-cell-cycle-and-mitosis/e/understand-the-cell-cycle-and-mitosis 2026-04-27T08:40:32.356784737Z Understand: The cell cycle and mitosis Check your understanding of the cell cycle and mitosis in this set of free, standards-aligned practice questions. Megan Cohn exercise https://www.khanacademy.org/science/ap-biology/heredity/meiosis-and-genetic-diversity/a/phases-of-meiosis 2026-04-27T08:40:32.356784737Z Learn: Meiosis Learn about the intricacies of meiosis: chromosome reduction, crossing over, and more. article https://www.khanacademy.org/science/exam-preparation-class-11th-biology/x0c1a8c25d3e07544:week-2/x0c1a8c25d3e07544:cell-cycle-and-cell-division/v/meiosis-i-in 2024-05-24T08:02:35.006825876Z Meiosis I Watch the video to learn about meiosis I and how it helps in the formation of haploid gametes. Nivedhitha Suresh video https://cdn.kastatic.org/ka_thumbnails_cache/cd635ece-1a24-4d18-b9bb-61a60d9f3dd9_1280_720_base.png Meiosis I Watch the video to learn about meiosis I and how it helps in the formation of haploid gametes. https://cdn.kastatic.org/ka-youtube-converted/pVT9rcMnEOE.mp4/pVT9rcMnEOE.mp4 508 Cell division https://www.khanacademy.org/science/exam-preparation-class-11th-biology/x0c1a8c25d3e07544:week-2/x0c1a8c25d3e07544:cell-cycle-and-cell-division/v/meiosis-ii-in 2024-05-24T08:02:35.006825876Z Meiosis II A continuation of Meiosis I, watch this video to complete the journey a cell takes as it becomes haploid. Nivedhitha Suresh video https://cdn.kastatic.org/ka_thumbnails_cache/15e9861f-d57d-4e5e-884e-d325b22fe089_1280_720_base.png Meiosis II A continuation of Meiosis I, watch this video to complete the journey a cell takes as it becomes haploid. https://cdn.kastatic.org/ka-youtube-converted/bgZ_DSAu_CU.mp4/bgZ_DSAu_CU.mp4 272 Cell division https://www.khanacademy.org/science/ap-biology/heredity/meiosis-and-genetic-diversity/v/comparing-mitosis-and-meiosis 2023-09-10T17:11:17.624018169Z Comparing mitosis and meiosis Mitosis and meiosis are two different types of cell division. Mitosis occurs in somatic cells and results in two identical daughter cells with a diploid (2n) number of chromosomes. This process is essential for growth and repair in the body. On the other hand, meiosis occurs in germ cells and produces four non-identical gametes with a haploid (n) number of chromosomes. These gametes, such as sperm and egg cells, are crucial for sexual reproduction and genetic diversity. Sal Khan video https://cdn.kastatic.org/googleusercontent/fUQXPwlmBn3Ht4p8-EKLnts_AUh_BSZfZsdO2wf8Z03ud8BFjq_8_TmUpefD3PTUcl9rdjalF5aizcmrg5wetljNhg Comparing mitosis and meiosis Mitosis and meiosis are two different types of cell division. Mitosis occurs in somatic cells and results in two identical daughter cells with a diploid (2n) number of chromosomes. This process is essential for growth and repair in the body. On the other hand, meiosis occurs in germ cells and produces four non-identical gametes with a haploid (n) number of chromosomes. These gametes, such as sperm and egg cells, are crucial for sexual reproduction and genetic diversity. https://cdn.kastatic.org/ka-youtube-converted/IQJ4DBkCnco.mp4/IQJ4DBkCnco.mp4 351 Cell division https://www.khanacademy.org/science/up-class-11th-biology/x6cdb38ba1d131d88:cell-cycle-and-cell-division/x6cdb38ba1d131d88:meiosis/e/meiosis-up 2026-04-08T00:54:09.631945657Z Meiosis Meiosis Moumita Sen exercise https://www.khanacademy.org/science/cambridge-o-level-biology-cie/x2a084a90105205d2:development-of-organisms-and-continuity-of-life/x2a084a90105205d2:cell-division-mitosis-and-meiosis-uncontrolled-cell-division/a/hs-meiosis-review 2021-04-29T07:57:46Z Meiosis review article https://www.khanacademy.org/science/bridge-course-class-11th-biology/xfa1bbeaa3bc88e64:cells-and-tissues/xfa1bbeaa3bc88e64:cells/e/cell-division 2026-03-06T17:50:38.494926415Z Cell Division Let's solve some questions vibhor exercise