Given below are two statements: One is labelled Assertion(A) and the other is labelled Reason(R).
Assertion (A) : Prophase – I is of longer duration and prophase – II is of shorter duration.
Reason (R): Prophase – I is complicated and is divisible into five substages and prophase – II is simple.
In the light of above statements, choose the correct answer from the options given below.

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Both (A) and (R) are correct and (R) is the correct explanation of (A)

Both (A) and (R) are correct but (R) is not the correct explanation of (A)

(A) is correct but (R) is not correct

Both (A) and (R) are incorrect

answer is A.

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Detailed Solution

Prophase – I is of longer duration and prophase – II is shorter.
Prophase – I is complicated and is divisible into five substages where crossing over and reduction in chromosomal number takes place. While prophase – II is simple and short, condensation of chromosomes and their release into cytoplasm takes place during this phase.

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