Assertion: DNA synthesis occurs in `G_(1)` and `G_(2)` periods of cell cycle.
Reason: During `G_(1)` and `G_(2)` phase the DNA contents become double.

Options

A. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
B. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
C. If the assertion is true but the reason is false
D. If both the assertion and reason are false

Answer

D

Explanation

DNA synthesis occurs in `G_(2)` the phase of the cell cycle.
During S and `G_(2)` phase DNA content become double.