50 % would be the recombination frequency for two genes that are on separate chromosomes.
50 % would be the recombination frequency for two genes that are on separate chromosomes.
what would be the recombination frequency for two genes that are on separate chromosomes?
50 %
the recombination frequency will be 50% when two genes are located on different chromosomes or when they are widely separated on the same chromosome. this is a consequence of independent assortment.









































when two genes are close together on the same chromosome, they do not assort independently and are said to be linked. whereas genes located on different chromosomes assort independently and have a recombination frequency of 50%, linked genes have a recombination frequency that is less than 50%.
genetic linkage
recombination frequency is a measure of genetic linkage and is used in the creation of a genetic linkage map. recombination frequency ("θ") is the frequency with which a single chromosomal crossover will take place between two genes during meiosis. a centimorgan (cm) is a unit that describes a recombination frequency of 1%. in this way we can measure the genetic distance between two loci, based upon their recombination frequency. this is a good estimate of the real distance. double crossovers would turn into no recombination. in this case we cannot tell if crossovers took place. if the loci we're analysing are very close (less than 7 cm) a double crossover is very unlikely. when distances become higher, the likelihood of a double crossover increases. as the likelihood of a double crossover increases we systematically underestimate the genetic distance between two loci.
genetic linkage