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Base Pairing

Pairing of ho...

Question

Pairing of homologous chromosomes that occur during zygotene stage is called ..........

A

Synapse

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B

Synapsis

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C

Crossing over

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D

Terminalisation

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Solution

The correct option is B Synapsis
Synapsis (also called syndesis) is the pairing of two homologous chromosomes that occurs during meiosis. It allows matching-up of homologous pairs prior to their segregation, and possible chromosomal crossover between them. Synapsis takes place during prophase I of meiosis.
Thus B is the correct option.

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