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Zygotene

Chromonemata ...

Question

Chromonemata start associating into bivalent chromosomes during

A

Zygotene

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B

Leptotene

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C

Pachytene

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D

Diplotene

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Solution

The correct option is A Zygotene
Prophase I of meiosis I is comprised of leptotene, zygotene, pachytene, diplotene and diakinesis. During zygotene, homologous chromosomes join laterally in the process of synapsis to form bivalents, which are pairs of homologous chromosomes.

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