Question

In meiosis, if all of the chromosomes fail to separate normally, and end up migrating to one of the two daughter cells, the result is that all four cells are abnormal. This event is known as _____ _____.

Answer 1

The event where all chromosomes fail to separate during meiosis and migrate to one daughter cell is known as nondisjunction, leading to gametes with abnormal chromosome numbers.

Step-by-step explanation:

In meiosis, if all of the chromosomes fail to separate normally, leading to their migration to one of the two daughter cells, the phenomenon is known as nondisjunction. This error during cell division can occur either in the first meiotic division, where synapsed homologs fail to separate, or in the second division, where sister chromatids fail to properly segregate. This event gives rise to gametes with an abnormal chromosome number, further leading to polyploidy—if extra sets of chromosomes are present—or aneuploidy, the condition of having missing or additional individual chromosomes.