Biology, 16.03.2020 20:16 gymnastcaitlyn1

These homologous chromosomes carry different alleles of the A and B genes. How could crossing over affect the distribution of the four alleles: A, a, B, and b? A. Crossing over would always keep A and B together on the same chromosome, and keep a and b together on the same chromosome. B. Crossing over would always put A and B on different chromosomes, and always put a and b on different chromosomes. C. Crossing over would sometimes, but not always, exchange the positions of A and a, and of B and b, on homologous chromosomes. D. Crossing over would sometimes, but not always, delete one or more of the four alleles from both homologous chromosomes.

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These homologous chromosomes carry different alleles of the A and B genes. How could crossing over a...

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