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Multiple Choice
Which event occurs during Meiosis II but not during Meiosis I?
A
Pairing of homologous chromosomes
B
Crossing over of homologous chromosomes
C
Separation of sister chromatids
D
Formation of tetrads
Verified step by step guidance
1
Understand the stages of meiosis: Meiosis consists of two sequential stages, Meiosis I and Meiosis II. Each stage has distinct events that occur during the process of cell division.
Identify the key events in Meiosis I: During Meiosis I, homologous chromosomes pair up and undergo crossing over, which leads to genetic recombination. This stage also involves the formation of tetrads, where homologous chromosomes are aligned together.
Recognize the key events in Meiosis II: Meiosis II resembles mitosis, where the primary event is the separation of sister chromatids. This is distinct from Meiosis I, where homologous chromosomes are separated.
Compare the events of Meiosis I and Meiosis II: While Meiosis I focuses on the separation of homologous chromosomes, Meiosis II is characterized by the separation of sister chromatids, which is not a feature of Meiosis I.
Conclude the unique event of Meiosis II: The separation of sister chromatids is the event that occurs during Meiosis II but not during Meiosis I, distinguishing the two stages in the process of meiosis.