Question

In a microspore, the number of choromosomes is 10 and DNA content is 20 pg. what is the number of chromosomes and DNA content in its meiocyte at $G_1$ stage?

• A. 20, 20
• B. 10, 40
• C. 20, 40
• D. 10, 20

Answer 1

Answer: (C)

20, 40

Since n = 10 and haploid DNA content is 20 pg, the Meiocyte being diploid at G1 phase i.e., before S phase should contain 2n = 20 chromosomes and diploid DNA content i.e., 40 pg.

So, the correct answer is, '20, 40'.