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Biology, 31.05.2021 22:00 ethanyayger

Plz help What happens to chromosomes during crossing-over? 1. Sister chromatids are pulled apart by spindle fibers.
2. Sister chromatids separate at the centromere.
3. Homologous chromosomes exchange corresponding segments of DNA.
4. Homologous chromosomes move from one side of the cell to the other.

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