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You have studied mitosis in onion root tip cells. It has $14$ chromosomes in each cell. Can you tell how many chromosomes will the cell have at $G_{1}$ phase, after S phase, and after M phase? Also, what will be the DNA content of the cells at $G_{1}$ , after S and at $G_{2}$ , if the content after M phase is $2$ C?

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Solution

At G1 it will have 14 chromosomes
At S also it will have 14 chromosomes
G2 also has 14 chromosomes
After M phase 7 chromosomes
The content will be 2C at G1 and it will be 4C at G2 and S phase.

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Q. You have studied Mitosis in onion root tip cells. Can you tell how many chromosomes will the cell have at G1 phase, after S phase, and after M phase? Also what will be the DNA content of the cells at G1, after S and at G2 , if the content after M phase is 2C?

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