Question

For independently assorting genes the maximum recombination

frequency is 50%. Comment on this observation and provide
reasoning.

Answer 1

The recombination frequency between two genes can not be more than 50 percent due to the independent and random assorting of the genes that are linked generating 50% recombination.

* Genes should be located far enough from one another so that crossover points can be made.

Example: Genes present at the 2 extreme ends of the chromosome.

* There should not be the linkage between the two genes due to linked genes go together. So no recombination happens.

It may be more than 50% if selected parents are heterozygous. But Mendel took homozygous parents. So, the maximum is 50%. There will be no recombinant if the two genes are linked.