NEET Biology question

In which stage of the first meiotic division do the sister chromatids of each chromosome become clearly visible/resolved?

(A)Leptotene
(B)Zygotene
(C)PachyteneCorrect
(D)Diplotene

Answer: (C)

Solution

Although sister chromatids physically arise from DNA replication before meiosis begins, they remain tightly apposed and indistinguishable in leptotene/zygotene; by pachytene, as

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Question ID VK-127141