Multiple Choice
Meiosis II is similar to mitosis in that it results in which of the following cellular events?
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17. Meiosis and Sexual Reproduction
Meiosis
Multiple Choice
In which process does crossing over (homologous recombination between non-sister chromatids) typically occur?
A
Neither; crossing over occurs only during DNA replication (S phase)
B
Both mitosis and meiosis at the same frequency
C
Meiosis (during prophase I)
D
Mitosis (during prophase)
Verified step by step guidance1
Understand the concept of crossing over: it is the exchange of genetic material between non-sister chromatids of homologous chromosomes, which increases genetic diversity.
Recall the phases of the cell cycle and the processes of mitosis and meiosis, focusing on when homologous chromosomes pair up.
Identify that homologous recombination (crossing over) requires the pairing of homologous chromosomes, which occurs during meiosis but not during mitosis.
Recognize that crossing over specifically takes place during prophase I of meiosis, when homologous chromosomes form tetrads and exchange segments.
Conclude that crossing over does not occur during DNA replication (S phase) or mitosis, but is a hallmark event of meiosis prophase I.
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