Sometimes homologous chromosomes fail to separate during meiosis, resulting in one daughter cell with an extra chromosome and one daughter cell missing a chromosome. This failure of chromosome separation is called ____.
A)nondisjunction
B)nonseparation
C)disjunction
D)homologue attachment
E)meiosis I failure

Question

Quizplus · Accepted Answer

Nondisjunction is the failure of homologous chromosomes to separate during meiosis, resulting in an abnormal distribution of chromosomes in the daughter cells. It can lead to reproductive disorders such as Down syndrome, Turner syndrome, and Klinefelter syndrome.

Sometimes Homologous Chromosomes Fail to Separate During Meiosis, Resulting in One