When two genes are located on the same chromosome, the chance of a crossover producing recombination between the genes is related to the distance between the two genes. ... This is because as the two genes are located farther apart, the chance of double or even number of crossovers between them also increases.

How does distance affect recombination frequency?

So, we can say that a pair of genes with a larger recombination frequency are likely farther apart, while a pair with a smaller recombination frequency are likely closer together. Importantly, recombination frequency "maxes out" at 50% (which corresponds to genes being unlinked, or assorting independently).

What is the relationship between recombination frequency and genetic distance?

Recombination frequency (genetic distance) is determined by the frequency of the recombination events between the two genes in meiosis. The greater the physical distance between the two genes, the more likely are they to recombine during any given meiosis event.