In a female animal with a diploid chromosome number of 12,half of the egg cells are found to have five chromosomes.The most probable explanation is
A) normal mitosis.
B) normal meiosis.
C) nondisjunction in meiosis I.
D) nondisjunction in meiosis II.
E) nondisjunction in mitosis.

Question

Quizplus · Accepted Answer

Nondisjunction in meiosis I can cause half of the resulting egg cells to have an abnormal number of chromosomes, as the homologous pairs fail to separate properly. This would result in egg cells with 5 chromosomes instead of the normal 6.

In a Female Animal with a Diploid Chromosome Number of 12,half