Which of the following statements is TRUE regarding nondisjunction?
A) Nondisjunction only occurs during meiosis I or meiosis II-never during mitosis.
B) Nondisjunction occurring during meiosis II results in two gametes that completely lack certain chromosomes.
C) Nondisjunction only contributes to the development of trisomy 21-not trisomy 13 or 18.
D) Nondisjunction only occurs between autosomes-the sex chromosomes are rarely affected by nondisjunction.
E) None of the answer options is correct.
Correct Answer:
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