The Centimorgan (CM)is a Unit Named in Honor of Thomas

Question

The centimorgan (cM)is a unit named in honor of Thomas Hunt Morgan. To what is it equal?
A) the physical distance between two linked genes
B) 1% frequency of recombination between two genes
C) 1 nanometer of distance between two genes
D) the distance between a pair of homologous chromosomes
E) the recombination frequency between two genes assorting independently

Accepted Answer

The centimorgan (cM) is a unit of measurement of genetic linkage. It is defined as the distance between two linked genes where the recombination frequency is 1%. This means that there is a 1% chance that a crossover will occur between two linked genes during meiosis. It is not equal to the physical distance between two genes or the distance between a pair of homologous chromosomes.