The number of DNA strands (chromatids) in a c | vedclass

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

Question

(B) During the $S$-phase (Synthesis phase) of the cell cycle,$DNA$ replication occurs,which doubles the amount of $DNA$ per chromosome.In the $G_{1}$-

Vedclass · Accepted Answer

Two

Vedclass · Answer

(B) During the $S$-phase (Synthesis phase) of the cell cycle,$DNA$ replication occurs,which doubles the amount of $DNA$ per chromosome.In the $G_{1}$-phase,each chromosome consists of a single chromatid (one $DNA$ molecule).After $DNA$ replication in the $S$-phase,each chromosome consists of two sister chromatids,each containing one $DNA$ molecule.Therefore,at the $G_{2}$-stage,each chromosome contains two $DNA$ strands (chromatids) held together by a centromere.

The number of $DNA$ strands (chromatids) in a chromosome at the $G_{2}$-stage is:

Similar Questions

$DNA$ and histone proteins are synthesized during the following phase of the cell cycle:

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

$DNA$ replication occurs during

Which is synthesized in $G_{1}$-phase?

Mature nerve cells are incapable of cell division. These cells are probably considered to be in:

Vedclass Test Series

Exam Paper Generator

Online Exam Module