Final answer:
Nondisjunction is the failure of chromosomes to separate properly during meiosis, resulting in abnormal gametes. Nondisjunction in anaphase II does not cause more harm than in anaphase I.
Step-by-step explanation:
Nondisjunction is the failure of homologous chromosomes to separate during meiosis I or the failure of sister chromatids to separate during meiosis II. It can result in the formation of gametes with abnormal chromosome numbers, leading to aneuploidy. In anaphase II, chromosomes are separated, and if nondisjunction occurs in this phase, it can lead to the formation of gametes with unequal numbers of chromosomes. Therefore, the statement that nondisjunction in anaphase II is more detrimental than nondisjunction in anaphase I is FALSE.