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In meiosis centromeres divide and chroma...

In meiosis centromeres divide and chromatids separate during

A

Anaphase I

B

Anaphase II

C

Metaphase I

D

Prophase I

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The correct Answer is:
To determine during which phase of meiosis the centromeres divide and chromatids separate, let's analyze the stages of meiosis step by step. ### Step-by-Step Solution: 1. **Understanding Meiosis**: Meiosis consists of two sequential divisions: Meiosis I and Meiosis II. Each of these divisions has specific phases: prophase, metaphase, anaphase, and telophase. 2. **Meiosis I vs. Meiosis II**: - In Meiosis I, homologous chromosomes are separated. This means that each chromosome still consists of two sister chromatids. - In Meiosis II, the sister chromatids are separated. 3. **Focus on Anaphase**: - During **Anaphase I**, homologous chromosomes are pulled apart to opposite poles of the cell. However, the sister chromatids remain attached at their centromeres. - During **Anaphase II**, the centromeres divide, and the sister chromatids are pulled apart to opposite poles. This is the key phase where chromatids separate. 4. **Conclusion**: The question asks specifically about the division of centromeres and the separation of chromatids. This occurs during **Anaphase II** of meiosis. 5. **Final Answer**: Therefore, the correct answer is **Option B: Anaphase II**.
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TRUEMEN BIOLOGY ENGLISH-CELL CYCLE AND CELL DIVISION-MULTIPLE CHOICE QUESTIONS
  1. In a culture of E.coli the cell population increased from 1.5 xx 10^(6...

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  2. The term "meiosis" was given by

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  3. In meiosis centromeres divide and chromatids separate during

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  4. Name the stage of mitosis in which chromosomes are arranged on the equ...

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  5. In a dividing somatic cell, which one of the following stage is diploi...

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  6. Anastral mitosis is found in

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  7. Leptotene chromosomes have

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  8. Bead-like thickened portions of leptotene chromosomes are

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  9. If a somatic cell undergoes two successive nuclear divisions without c...

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  10. Name the stage of cell cycle at which one of the following events occu...

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  11. What is the average cell cycle span for a mammalian cell?

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  12. When energy is stored and cell undergoes differentiation, the stage is...

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  13. Which one of the following precedes re-formation of the nuclear envelo...

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  14. Postmitotic gap phase and synthetic phase refer to

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  15. The two chromatids of a metaphase chromosome represent

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  16. Which one of the following pair is correctly matched?

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  17. A cell has 46 chromosomes at each pole in mitotic telophase. In tis di...

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  18. If the DNA content of a cell is 2C after M phase, what will be the DNA...

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  19. Reductional division involves

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  20. Match List-I (Distinguishing features based on chromosomal appearance)...

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