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(B) In the cell cycle,the $S$-phase (Synthesis phase) is responsible for $DNA$ replication.During the $S$-phase,the amount of $DNA$ per cell doubles (

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(B) In the cell cycle,the $S$-phase (Synthesis phase) is responsible for $DNA$ replication.During the $S$-phase,the amount of $DNA$ per cell doubles (from $2C$ to $4C$),but the number of chromosomes remains the same.Since the $G_2$-phase occurs after the $S$-phase and before mitosis,the cell contains double the amount of $DNA$ compared to the initial $G_1$-phase.Therefore,if the initial amount of $DNA$ in the $G_1$-phase is considered as $1$ unit (or $2C$),the amount in the $G_2$-phase is $2$ units (or $4C$ relative to the original $DNA$ content per chromosome set).

During the $G_2$-phase of the cell cycle,the amount of $DNA$ in the chromosomes is .......

Similar Questions

Given below are the two statements.
Statement $I$: Replication of $DNA$ occurs in the '$S$' phase of interphase in the cell cycle.
Statement $II$: Replication of $DNA$ takes place only once in the cell cycle.
In the light of above statements,choose the correct answer from the options given below:

Which is the most active phase of the cell cycle with respect to gene expression?

In which phase does each chromosome's $DNA$ molecule replicate?

In animal cells,during the $S$ phase,$DNA$ replication begins in the ......... and the centriole duplicates in the cytoplasm.

During which phase of interphase do biosynthetic processes occur?

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