Map Distances Between Each Pair of Three Linked Genes L,M,and

question 7

Essay

Map distances between each pair of three linked genes L,M,and N are measured by two-point test crosses and determined to be: L-M = 20 cM,M-N = 25 cM,and L-N = 38 cM.Explain why the measured distance between the two farthest apart genes is not equal to the sum of the two shorter distances.

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