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  4. How many chromosomes will the cell have at G1 , after S and after M-phase respectively, if it has 14 chromosomes at interphase?

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Q. How many chromosomes will the cell have at $G_{1}$ , after S and after M-phase respectively, if it has $14$ chromosomes at interphase?

Delhi UMET/DPMTDelhi UMET/DPMT 2011

Solution:

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.