Question

If the cell at G1 phase at 2 Giga base pairs of DNA, what is the DNA content of the cell right after Telophase II?

(a) 1 Giga base pairs

(b) 2 Giga base pairs

(c) 3 Giga base pairs

(d) 4 Giga base pairs

The question was posed to me in class test.

I want to ask this question from Chromosomal Theory of Inheritance-2 in division Principles of Inheritance and Variation of Biology – Class 12

Answer 1

Correct choice is (d) 4 Giga base pairs

Explanation: The cell starts with two copies of each chromosome during the G1 phase. G2 phase witnesses DNA duplication. However, by the end of Meiosis II, cell splits into four, and each germ cell receives a single copy of each chromosome. Thus, the DNA content at the end of meiosis would be half what it was at the time of onset.