Question

If two genes are 50cM apart, are they linked or unlinked? Give brief reason for your answer.

Answer 1

The recombination frequency between two genes cannot be greater than 50% because random assortment of genes generates 50% recombination (non-linked genes produce 1:1 parental to non-parental. Thus, the recombination frequency would be non-parental/total → 1/(1+1) = 50%).