science
Grade-10
Easy

Question

Crossing over occurs in which phase?

  1. Prophase II

  2. Prophase I

  3. Metaphase II

  4. Metaphase I

hintHint:

The crossover happens in the first stage of meiosis I.

The correct answer is:

Prophase I


    Crossover is an enzyme-mediated process in which the exchange of genetic material occurs between non-sister chromatids of homologous chromosomes. It occurs during the pachytene phase of prophase I of meiosis.

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