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Chapter 81 -- Part 3: Law of Independent Assortment
The normal 23 chromosomes were donated by one gamete.
The extra chromosomes were caused by an error called nondisjunction, in which one pair of chromosomes failed to separate.
A normal meiotic division would produce normal gametes, normal offspring, and a normal karyotype.
Choice B is incorrect because the error occurred during meiosis and the formation of gametes.
Choice D is not correct because the question involved an entire chromosomes.
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