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Biology · CELL CYCLE AND CELL DIVISION

हिन्दी

A diploid parent cell has 20 bivalents during prophase I of meiosis. What will be the number of chromosomes in each of the four daughter cells formed at the end of meiosis II?

  1. A
    20
  2. B
    40
  3. C
    10
  4. D
    5
View Answer & Solution

Correct answer · Option A

20

Explanation

20 bivalents represent \( 2n = 40 \). Meiosis reduces the chromosome number by half, yielding haploid daughter cells with \( n = 20 \) chromosomes.

Related questions

During anaphase of mitosis, as daughter chromosomes migrate toward opposite poles, the orientation of their structural regions is such that:→In oocytes of certain vertebrates, which sub-stage of Prophase I can last for months or even years?→How does plant cytokinesis fundamentally differ from animal cytokinesis in terms of precursor structure and direction of wall/furrow formation?→Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): During the S phase of the cell cycle, the amount of DNA per cell doubles from 2C to 4C, but the chromosome number remains unchanged (2n). Reason (R): DNA replication creates duplicate copies of the DNA molecules, which remain attached as sister chromatids at a single centromere. In the light of the above statements, choose the correct answer from the options given below:→
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