As a result of crossing over, sister chromatids are no longer identical to each other. True Crossing over prevents homologous


As a result of crossing over, sister chromatids are no longer identical to each other. True Crossing over prevents homologous chromosomes from separating during meiosis I. False For crossing over to occur, homologous chromosomes must align precisely early in prophase I so that nonsister chromatids can exchange corresponding segments of DNA. Crossing over occurs at the ends of chromosomes, rather than near the centromeres.


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