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Exchange of genetic material takes place between non-sister chromatids of homologous chromosomes, which pair up to form bivalents within the nucleus.

1. True
2. False
3. Cannot be determined
4. None of the above

Correct answer: True

Solution

Crossing over is a process that occurs during prophase I of meiosis, where non-sister chromatids of homologous chromosomes exchange genetic material. This happens within a bivalent structure in the nucleus.

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