Linkage · Botany

In which stage of meiosis does the physical exchange of segments between chromatids occur?

  1. Leptotene
  2. Zygotene
  3. Pachytene
  4. Diplotene
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Correct answer: Pachytene

During the pachytene stage of Prophase I, homologous chromosomes are tightly paired (synapsed), allowing for the breakage and rejoining of DNA strands known as crossing over.

Difficulty: Medium Question 12 of 20

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