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20 December, 21:19

The recombination frequency between three genes A, B, and C located on the same chromosome is obtained as follows:

A and C - 28%

A and B - 18%

B and C - 10%

Based on the result, which two genes are closest to each other?

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  1. 20 December, 22:24
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    Genes B and C with 10% recombination frequency are closest to each other. Because recombination happens at random, the distance between genes that are farther from each other creates higher recombination frequency. A low recombination frequency of 10% means the genes are closest to each other. The short distance between the two genes allow fewer recombination to happen, thus the frequency is low.
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