During meiosis, if nondisjunction occurs during anaphase II (shown below in cell #3) what are the possible gametes that can be produced from cell #3?

• A. A only.
• B. B only.
• C. C only.
• D. A & C.
• E. B & C
• F. A & B
• G. All three.

Answer: (D)

Verified step by step guidance

1. Understand that nondisjunction is an error in meiosis where chromosomes fail to separate properly during anaphase. In this case, it occurs during anaphase II.
2. In the image, cell #3 undergoes nondisjunction, leading to an unequal distribution of chromosomes in the resulting gametes.
3. Analyze the possible gametes: Gamete A has two chromosomes, Gamete B has one chromosome, and Gamete C has no chromosomes.
4. Determine the possible combinations of gametes that can result from nondisjunction in cell #3. Since nondisjunction leads to an abnormal number of chromosomes, consider which gametes reflect this abnormality.
5. Conclude that the possible gametes produced from cell #3 are those that reflect the nondisjunction event, which are Gametes A and C, as they show an abnormal number of chromosomes.