What is not true about the cell cycle?

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

Question

(C) In the $S$-phase (synthesis phase) of the cell cycle,the amount of $DNA$ per cell doubles,but the chromosome number remains the same. - Statement

Vedclass · Accepted Answer

$c$. During $G_2$ phase,a cell contains double the amount $(4C)$ of $DNA$ present in the original diploid cell $(2C)$.

Vedclass · Answer

(C) In the $S$-phase (synthesis phase) of the cell cycle,the amount of $DNA$ per cell doubles,but the chromosome number remains the same. - Statement $a$ is true: $G_1$ phase involves metabolic activity and protein synthesis without $DNA$ replication. - Statement $b$ is true: $S$-phase involves $DNA$ replication,resulting in sister chromatids carrying duplicate genes. - Statement $c$ is true: After $S$-phase,the $DNA$ content becomes $4C$ compared to the initial $2C$. - Statement $d$ is false: The chromosome number does not double during the $S$-phase; it remains $2n$ because the sister chromatids remain attached at the centromere. Therefore,only statement $d$ is incorrect.

Similar Questions

In the $S$ phase of the cell cycle:

In the process of mitotic division during interphase,chromosome material remains in the form of very loosely coiled threads called

What is the primary function of Cyclin Dependent Kinases ($CDK$s)?

Which phase of the cell cycle lasts for the longest duration?

$A :$ $G_2$-phase is the pre-mitotic phase.
$R :$ Chromosomes undergo condensation in this phase.

Vedclass Test Series

Exam Paper Generator

Online Exam Module