Question

What will be the DNA content at the end of the S-phase of the cell, if its meiotic products have 8 pg of DNA in each cell?

• A. 16
• B. 32
• C. 64
• D. 8

Answer 1

The correct option is B

32

The correct option is option B.

Explanation of the correct option:

1. The meiotic products or the daughter cells having 8pg of DNA will enter the G1 phase where they have a diploid chromosomal number (2n).
2. After G1, the cells enter the S phase or the synthesis phase.
3. DNA replication occurs during the S phase.
4. This implies the duplication of the (2n) chromosomes or 2*(2n)=4n.
5. Here, n=8pg, therefore 4n = 4*8, i.e., 32pg.

Explanation of the incorrect options:

Option A:

Applying 4n does not give 16, hence it does not give incorrect.

Option C:

Applying 4n does not give 64, hence it does not give incorrect.

Option D:

Applying 4n does not give 8, hence it does not give incorrect.

Final answer: The DNA content at the end of the S-phase of the cell, if it's meiotic products have 8 pg of DNA in each cell is 32.