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Question

Chiasmata in cell division is seen in

A
Leptotene
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B
Zygotene
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C
Pachytene
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D
Diplotene
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Solution

The correct option is D Diplotene
Chiasmata is defined as the point of contact or the physical link, between two chromatids belonging to homologous chromosomes.
At a given chiasma, an exchange of genetic material occurs between both chromatids, which is called a chromosomal crossover.
The chiasmata become visible during the diplotene stage of prophase I of meiosis. but the actual "crossing-over" of genetic material is thought to occur during the pachytene stage.

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