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What is the primary function of meiosis in sexually reproducing organisms?
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12. Meiosis
Introduction to Meiosis
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Two sister chromatids are joined at the centromere prior to meiosis. Which statement is correct?
A
They will separate during anaphase I of meiosis.
B
They will remain joined throughout meiosis.
C
They will separate during metaphase I of meiosis.
D
They will separate during anaphase II of meiosis.
Guida verificata passo dopo passo1
Understand the structure of a chromosome: Each chromosome consists of two sister chromatids joined at a region called the centromere.
Review the stages of meiosis: Meiosis consists of two rounds of division, meiosis I and meiosis II, each with its own phases: prophase, metaphase, anaphase, and telophase.
Focus on anaphase I: During anaphase I of meiosis, homologous chromosomes (each consisting of two sister chromatids) are separated and pulled to opposite poles of the cell. Sister chromatids remain joined at this stage.
Examine anaphase II: In anaphase II, the sister chromatids finally separate and are pulled to opposite poles of the cell. This is the stage where the sister chromatids are no longer joined.
Conclude with the correct statement: Based on the understanding of meiosis, the correct statement is that sister chromatids will separate during anaphase II of meiosis.
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