Question

How many chromosomes will the cell have at $G_1$ , after S and after M-phase respectively, if it has $14$ chromosomes at interphase?

• A. 14, 14, 7
• B. 14, 14, 14
• C. 7, 7, 7
• D. 7, 14, 14

Answer 1

Answer: (B)

Replication of DNA takes place at $S$-phase of cell cycle. The number of chromosomes reduced only in meiosis. So, the number remain $14,14$ and $14$ in $G_1$ , after $S$ and after $M-$phase.