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@katsterdid: Showitty leggings are some of my faves and the new and improved leggings are even better! Showitty Leggings #leggings #leggingsoutfit #showitty #stretchy #womensfashion #womensclothing #softleggings
Kat • Beauty|Fashion|Home •
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Monday 27 January 2025 17:49:51 GMT
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LEANNE• :
Love Showitty Leggins! I need to try these new ones!
2025-01-27 22:21:57
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Chantly Caree :
Cute!
2025-01-30 00:25:43
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Meiosis is a specialized form of cell division that reduces the chromosome number by half, resulting in the production of four genetically diverse daughter cells, each with half the number of chromosomes of the original cell. This process is essential for sexual reproduction and occurs in two successive stages: Meiosis I and Meiosis II. Here are the steps with brief explanations: ### **Meiosis I:** 1️⃣ Interphase: - Similar to mitosis, the cell prepares for division by increasing its size and replicating its DNA. 2️⃣ Prophase I: - **Chromatin condensation: DNA condenses into visible chromosomes. - **Synapsis: Homologous chromosomes pair up, forming tetrads. - **Crossing over: Segments of DNA are exchanged between homologous chromosomes, increasing genetic diversity. 3️⃣ Metaphase I: - **Tetrads alignment:** The pairs of homologous chromosomes (tetrads) line up at the cell's equator. - **Spindle attachment:** Spindle fibers attach to the centromere of each homologous chromosome. 4️⃣ Anaphase I: - Homolog separation: *Spindle fibers pull the homologous chromosomes apart to opposite poles of the cell. 5️⃣ Telophase I and Cytokinesis: - **Nuclear envelopes may reform** around the separated chromosomes, and the cell divides into two haploid cells. ### Meiosis II (similar to mitosis but with half the number of chromosomes):** 1️⃣ Prophase II: - Chromosomes, each consisting of two sister chromatids, recondense and become visible. 2️⃣ Metaphase II: - Chromosomes line up at the equator of each cell. - Spindle fibers attach to the centromeres of sister chromatids. 3️⃣ Anaphase II: - Sister chromatids separate and move to opposite poles of the cell. 4️⃣ Telophase II and Cytokinesis: - Nuclear envelopes form around each set of chromosomes. - The cells divide, resulting in four genetically diverse haploid cells. Meiosis introduces genetic diversity through crossing over and independent assortment during Metaphase I. These processes ensure that each gamete is genetically unique, contributing to the genetic variation seen in offspring. It's a critical process in sexual reproduction, leading to the continuation of species with varied genetic backgrounds. #biology #meiosis #science #fyp
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