A) leptotene
B) zygotene
C) pachytene
D) diplotene
Correct Answer: B
Solution :
Synapsis or pairing of homologous chromosomes takes place in zygotene of propnase I of meiosis I phase. It is very necessary for crossing over. In this process, two homologous (one comes from father and other from mother) chromosomes come to close and pair throughout their whole length.
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