NEET Biology Cell Cycle And Cell Division Based Practice Questions & Answers with Viewers Discussion and Detailed Explanation

Cell Cycle And Cell Division Topic Based

Question & Answer Discuss:

Chromosome synapsis or bivalent formation occurs in ______

(a) zygotene

(b) leptotene

(c) pachytene

(d) diplotene

Answer: (a)

Synapsis is the pairing of two homologous chromosomes during meiosis. It allows matching-up of homologous pairs prior to their segregation, and possible chromosomal crossover between them. The process of attachment of homologous chromosomes leads to the formation of bivalents. These two events occur in zygotene stage of prophase I.

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