Seudónimo Seudónimo

07-01-2021
Biology

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Crossing-over occurs
a. during prophase 2.
c. during prophase I.
b. during fertilization.
d. at the centromere

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carley20 carley20

07-01-2021

C. Prophase 1 crossing over occurs during prophase 1 of meiosis.

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07-01-2021

Answer : prophase I

Internets prove: Crossing over occurs only during prophase I.
The complex that temporarily forms between homologous chromosomes is only present in prophase I, making this the only opportunity the cell has to move DNA segments between the homologous pair.

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