Question

What is the DNA content of somatic cells in the G₂ phase if their meiotic outcome contains 20 picograms of DNA?

• A. 80 pg
• B. 160 pg
• C. 40 pg
• D. 20 pg

Answer 1

The correct option is A

80 pg

The correct option is C

Explanation of the correct option:

Step 1: Given data

Somatic cell meiotic products contain 20 picograms of DNA, implying that haploid cell content is 20 picograms.

Step 2: Applying the formula

1. As a result, because the somatic cell is diploid, it will have 40 picograms of DNA.
2. The G₂ phase of the cell cycle occurs after the S phase, hence the amount of DNA in the S phase doubles because of DNA replication.

Step 3: Solving equations to get the required value

The DNA in the somatic cell will be $40\times 2=80$ picograms.

Final answer: The content of DNA in the somatic cells is 80 picograms.