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easyMCQNEET 20192026BIOLOGY
1 mark

Crossing over takes place between which chromatids and in which stage of the cell cycle?

  1. A
    Non-sister chromatids of non-homologous chromosomes at Zygotene stage
  2. B
    Non-sister chromatids of homologous chromosomes at Pachytene stage
  3. C
    Non-sister chromatids of homologous chromosomes at Zygotene stage
  4. D
    Non-sister chromatids of non-homologous chromosomes at Pachytene stage

Solution & Step-by-step Explanation

Crossing over (recombination) is the exchange of genetic material that occurs during Pachytene of Prophase I. It happens between the non-sister chromatids of homologous chromosomes.

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Try it yourself before checking the explanation above.

Crossing over takes place between which chromatids and in which stage of the cell cycle?
A
Non-sister chromatids of non-homologous chromosomes at Zygotene stage
B
Non-sister chromatids of homologous chromosomes at Pachytene stage
C
Non-sister chromatids of homologous chromosomes at Zygotene stage
D
Non-sister chromatids of non-homologous chromosomes at Pachytene stage

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cell divisionmeiosispachytene

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