The fruit fly has 8 chromosomes (2n) in each | vedclass

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Question

(A) In the cell cycle,the $S$ phase (Synthesis phase) is characterized by the replication of $DNA$.During this phase,the amount of $DNA$ per cell doub

Vedclass · Accepted Answer

$8$

Vedclass · Answer

(A) In the cell cycle,the $S$ phase (Synthesis phase) is characterized by the replication of $DNA$.During this phase,the amount of $DNA$ per cell doubles (from $2C$ to $4C$),but the number of chromosomes remains the same.Since the number of chromosomes at the $G_1$ phase is $8$,after the $S$ phase,the number of chromosomes remains $8$ because the sister chromatids remain attached at the centromere.Therefore,the correct answer is $8$.

The fruit fly has $8$ chromosomes $(2n)$ in each cell. During interphase of mitosis,if the number of chromosomes at $G_1$ phase is $8$,what would be the number of chromosomes after $S$ phase?

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