WBCS.LIVE practice question

The crossing over of genetic material between non-sister chromatids strictly occurs during which sub-stage of Prophase I in meiosis?

Solve this multiple-choice question and check the correct answer with its explanation below.

Answer options

  1. Leptotene
  2. Zygotene
  3. Pachytene
  4. Diplotene

Correct answer and explanation

Correct answer: Pachytene

Explanation: āœ… Correct Answer: C) Pachytene šŸ“š Explanation: In Meiosis I, the highly critical process of genetic recombination (crossing over) takes place specifically during the Pachytene stage of Prophase I. During this stage, the paired homologous chromosomes are tightly bound together, and specialized enzymes facilitate the direct physical exchange of genetic material between non-sister chromatids.