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

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

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(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

It is observed that heart cells do not exhibit cell division. Such cells do not divide further and exit $G_{1}$ phase to enter an inactive stage called $G_{0}$ of cell cycle. Fill in the blanks.

In which phase of the cell cycle does $DNA$ replication occur?

Regarding the sequence of the cell cycle,which one is correct?

Which of the following human diploid cells do not undergo cell division?

During the cell cycle,in which phase does $DNA$ replication occur?

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