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coldgirl [10]
3 years ago
15

Why is the frequency of recombinant gametes always half the frequency of crossing over?

Biology
1 answer:
kvv77 [185]3 years ago
3 0
Crossing over occurs at the four-strand stage when two homologous chromosomes, each consisting of a pair of sister chromatids, are paired. Each crossover involves just two of the four strands and generates two recombinant strands.

Hope this helps!
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