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Zygotene

Assertion :Du...

Question

Assertion :During zygotene, chromosomes show bivalent stage. Reason: Bivalent is half the number of chromosomes.

A

Both Assertion and Reason are true, and Reason is the correct explanation of Assertion

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B

Both Assertion and Reason are true, but Reason is not the correct explanation of Assertion

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C

Assertion is true, but Reason is false

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D

Assertion is false, but Reason is true

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Solution

The correct option is B Both Assertion and Reason are true, but Reason is not the correct explanation of Assertion
A: During Zygotene the chromosomes show bivalent stage because homologous chromosome comes together and meet the chromatids of other homologous chromosome making a tetrad.
B: Bivalent is half the number of chromosomes because each bivalent has 2 chromosomes in it.
So, the correct option is 'Both Assertion and Reason are true, but Reason is not the correct explanation of Assertion'.

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