Question

question 28
if nondisjunction occurs on meiosis i, what percentage of the resulting gametes will have an aneuploidy?
50%
0%
25%
100%

Explanation:

Step1: Understand nondisjunction in Meiosis I

Nondisjunction in Meiosis I means homologous chromosomes fail to separate.

Step2: Analyze gamete formation

When nondisjunction occurs in Meiosis I, all four resulting gametes will have an abnormal chromosome number (aneuploidy).

Answer:

100%