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What is crossing-over? A. the mismatching of chromosomes during Metaphase I B. the passing of chromatides through the membrane C. the exchange of segments of DNA during synapses in Prophase I D. The exchange
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What is crossing-over?

A. the mismatching of chromosomes during Metaphase I
B. the passing of chromatides through the membrane
C. the exchange of segments of DNA during synapses in Prophase I
D. The exchange of segments of DNA during synapses in Metaphase I

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Maybe i think is option D not so sure
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