Question

For a somatic cell with $2n=4$, which of the following is true?(Note $G1$-growth phase $1$, $G2$-growth phase $2$, M-metaphase, P-prophase and T-telophase)

• A. (Number of chromatids) $G2=4$; (Number of chromosomes) $G1=4$
• B. (Number or chromatids) $G1=2$; (Number of sister chromatids) $T=8$
• C. (Number of chromatids) $P=8$(Number of chromosomes) $G2=4$
• D. (Number of chromatids) $G2=4$; (Number of chromosomes) $M=8$

Answer 1

The correct option is C (Number of chromatids) $P=8$(Number of chromosomes) $G2=4$

In a cell cycle, the contents of the cell other than the chromosomes are duplicated in G1phase. In S phase, the genetic material of the cell is duplicated, resulting in double the number of chromatids as before.

So, the correct answer is '((Number of chromatids) $P=8$(Number of chromosomes) $G2=4$'.