Scelta multipla
Which process results in the production of haploid cells from diploid cells?
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9. Mitosis and Meiosis
Meiosis
Scelta multipla
Crossing over (genetic recombination) occurs during which phase of meiosis?
A
Metaphase I
B
Anaphase I
C
Prophase I (specifically the pachytene stage)
D
Prophase II
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Recall the stages of meiosis I and meiosis II, focusing on the events that characterize each phase.
Understand that crossing over, or genetic recombination, involves the exchange of genetic material between homologous chromosomes.
Identify that homologous chromosomes pair up and form synaptonemal complexes during Prophase I, which facilitates crossing over.
Recognize that the specific substage of Prophase I where crossing over occurs is called the pachytene stage.
Conclude that crossing over does not occur during Metaphase I, Anaphase I, or Prophase II, but specifically during Prophase I (pachytene).
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