1. Precursor of an animal germ cell has 12 ng of DNA in it G1 Phase. What would be the amount of DNA in its each daughter cell immediately after meiosis?
A. 24 ng C. 6 ng B. 12 ng D. 3 ng
Answers
Answered by
22
Explanation:
in meiosis 1 the spermatocytes splits in two so it will become half of 12ng which is 6ng and when the meiosis 2 occur they will furthur dividd into two so they will now have 3ng each
Answered by
43
D. 3 ng is the correct option.
When spermatocytes split in half during meiosis 1, they become half of 12ng, or 6ng, and when meiosis 2 occurs, they will further divide into two, giving them 3ng apiece. The amount of DNA is halved as the cell divides into two daughter cells.
After the germ cell's last mitotic division, a period of DNA synthesis occurs, so that the cell initiating meiosis doubles the amount of DNA in its nucleus. In this state, each chromosome consists of two sister chromatids attached at a common kinetochore (centromere).
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