Nondisjunction occurs when
A) a portion of a chromosome breaks off and is lost.
B) two chromosomes fuse into one.
C) members of a chromosome pair fail to separate.
D) an entire pair of chromosomes is lost during meiosis I.

Question

Quizplus · Accepted Answer

Nondisjunction occurs when members of a chromosome pair fail to separate during meiosis. This can result in gametes with an extra chromosome or gametes missing a chromosome. This can lead to genetic disorders such as Down syndrome, Turner syndrome, and Klinefelter syndrome.

Nondisjunction Occurs When