A potato has a diploid number of 48. If an egg of this plant has 23 chromosomes, the most likely explanation is that
a. normal meiosis has occurred.
b. nondisjunction occurred during meiosis I.
c. normal mitosis has occurred.
d. nondisjunction occurred during mitosis.
e. crossing over occurred during meiosis I.
Ans: b. nondisjunction occurred during meiosis I.
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