Grade 11Mechanics
At which stage of Meiosis I does crossing over occur?ALepopteneBZygoteneCPachyteneDDiplotene
At which stage of Meiosis I does crossing over occur?
A
Lepoptene
B
Zygotene
C
Pachytene
D
Diplotene
1 Answer
ankit singh
- achytene is the third phase of meiosis 1. In pachytene, the exchange of the DNA segments takes place between non-sister chromatids of homologous chromosomes.
- This process is called crossing over and it leads to recombination.
- Chiasma is a region where two homologous chromosomes undergo crossover.
Thus the correct answer is option C.
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