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Question

During which stage of Prophase I, does the crossing over takes place ?


  1. Homologous chromosomes

  2. Sister chromatids

  3. Cross overs

  4. Parental chromosomes


Solution

The correct option is A

Homologous chromosomes


Pachytene is the third stage of the prophase of meiosis, following zygotene, during which the paired chromosomes shorten and thicken, the two chromatids of each separate, and exchange of segments between chromatids occur.

 

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