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Meiosis - 1 Video Lecture | Biology for ACT

FAQs on Meiosis - 1 Video Lecture - Biology for ACT

1. What is meiosis?
Ans. Meiosis is a type of cell division that occurs in sexually reproducing organisms. It involves the formation of gametes (sex cells) with half the number of chromosomes as the parent cell.
2. How does meiosis differ from mitosis?
Ans. Meiosis and mitosis are both types of cell division, but they have key differences. Meiosis results in the formation of gametes with half the number of chromosomes, while mitosis produces identical diploid cells with the same number of chromosomes as the parent cell.
3. What are the stages of meiosis?
Ans. Meiosis consists of two main stages: meiosis I and meiosis II. Meiosis I involves the separation of homologous chromosomes, while meiosis II separates sister chromatids. Each stage further involves phases such as prophase, metaphase, anaphase, and telophase.
4. Why is meiosis important for sexual reproduction?
Ans. Meiosis is important for sexual reproduction as it ensures genetic diversity. During meiosis, the shuffling and exchange of genetic material between homologous chromosomes result in the creation of genetically unique offspring.
5. What is the significance of crossing over in meiosis?
Ans. Crossing over, which occurs during meiosis I, is the exchange of genetic material between homologous chromosomes. This process promotes genetic diversity by creating new combinations of alleles on the chromosomes, leading to greater genetic variation among offspring.
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