What change occurs in the nucleus of a cell a | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(C) In the cell cycle,the $G_1$ phase represents the initial growth phase where the $DNA$ content is $2C$ and the chromosome number is $2n$. During th

Vedclass · Accepted Answer

$2C \rightarrow 4C, 2n \rightarrow 2n$

Vedclass · Answer

(C) In the cell cycle,the $G_1$ phase represents the initial growth phase where the $DNA$ content is $2C$ and the chromosome number is $2n$. During the $S$ phase (Synthesis phase),$DNA$ replication occurs,which doubles the $DNA$ content from $2C$ to $4C$,while the chromosome number remains $2n$ because the sister chromatids remain attached at the centromere. Following the $S$ phase,the cell enters the $G_2$ phase. Therefore,in the $G_2$ phase,the $DNA$ content is $4C$ and the chromosome number remains $2n$. Thus,the transition from $G_1$ to $G_2$ involves a change in $DNA$ content from $2C$ to $4C$,while the ploidy $(2n)$ remains constant.

What change occurs in the nucleus of a cell as it progresses from the $G_1$ phase to the $G_2$ phase?

Similar Questions

In a somatic cell cycle:

When a cell has a stalled $DNA$ replication fork,which checkpoint should be predominantly activated?

During which phase does the cellular content double and the cell size increase?

The formation of new cells occurs through which cycle?

In which phase does the centriole duplicate?

Vedclass Test Series

Exam Paper Generator

Online Exam Module