Q.

Given below are two statements: One is labelled Assertion(A) and the other is labelled Reason(R).

Assertion (A) : Chromosome replication preceeds meiosis – I. It does not occur prior to meiosis – II.
Reason (R) : Interphase occurs prior to each mitosis.

In the light of above statements, choose the correct answer from the options given below.

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a

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

b

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

c

Both (A) and (R) are incorrect

d

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

answer is B.

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Detailed Solution

The M Phase represents the phase when the actual cell division or mitosis occurs and the interphase represents the phase between two successive M phases.

Meiosis involves two sequential cycles of nuclear and cell division called meiosis I and meiosis II but only a single cycle of DNA replication. 

Meiosis I is initiated after the parental chromosomes have replicated to produce identical sister chromatids at the S phase.

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