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.
Answers: 1
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What happens as electrons move along the chain of molecules known as the electron transport chain? they gain energy, which causes atp molecules to lose phosphate groups. they gain energy, which causes h *ions to join with oxygen to produce water. they lose energy, which is then used by the cell to make atp. they lose energy, which is then used to break down atp.
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Plz help What happens to chromosomes during crossing-over?
1. Sister chromatids are pulled apart by...
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