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Solution


Q.

In meiosis, crossing over is initiated at    [2016]
1 Zygotene  
2 Diplotene  
3 Pachytene  
4 Leptotene  

Ans.

(3)

Crossing over is a process of exchange of genetic material or chromatid segments between two homologous chromosomes. It is initiated during pachytene stage of meiosis.