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Assertion : Interphase occupies 75-95% o...

Assertion : Interphase occupies 75-95% of the total generation time.
Reason: Interphase (I-phase) is the long non-dividing phase.

A

If both assertion and reason are true and reason is the correct explantion of assertion

B

If both assertion and reason are true but reason is not the correct explnantion of assertion.

C

If assertion is true but reason is false.

D

If both assertion and reason are false.

Text Solution

Verified by Experts

The correct Answer is:
B

The cell cycle is divided into two basic phase :(i) interphase, (II), M-phase. The M phaser represents the phase when the actual cell division or mitosis occurs and the interphase represetns the phase between two csuccessive M phases. In the 24 hour average duration of cell cycle of human cell, cell division proper lasts for only about an hour. The interphase lasts more than 955 of the duration of cell cycle.
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Read the following statements about cell division and select the correct ones. (i) M phase represents the phase when actual cell division occurs and I phase represents the phase between two successive M phases. (ii) In the 24 hours average duration of cell cycle of a human cell, cell division proper lasts for only about an hour. (iii) M phase constitutes more than 95% of the duration of cell cycle.