Scelta multipla
During meiosis, at which stage do sister chromatids separate from each other?
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9. Mitosis and Meiosis
Meiosis
Scelta multipla
During which phase of meiosis does crossing over between homologous chromosomes occur?
A
Prophase I (specifically during pachytene)
B
Anaphase I
C
Metaphase I
D
Prophase II
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Recall the stages of meiosis I and meiosis II, focusing on the key events that characterize each phase.
Understand that crossing over is the process where homologous chromosomes exchange genetic material, increasing genetic diversity.
Identify that crossing over occurs during meiosis I, specifically when homologous chromosomes pair up and form synaptonemal complexes.
Recognize that this pairing and exchange happen during Prophase I, and more precisely during the pachytene substage of Prophase I.
Conclude that crossing over does not occur during Anaphase I, Metaphase I, or Prophase II, as these phases involve chromosome alignment, separation, or preparation for the second division.
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