Question

Assertion : $G_1$ phase is the interval between mitosis and initiation of $DNA$ replication.
Reason : The cell is metabolically inactive during $G_1$ phase.

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

Answer 1

Answer: (C)

G1 phase is also known as first growth phase or post mitotic gap phase. It is the phase between end of mitotic phase of previous cell and initiation of $S$-phase of next mitotic phase. During $G_1$ phase the cell is metabolically active and continuously grows. In this phase different types of $RNA(mRNA,tRNA$ and $rRNA$) and proteins are synthesised.