AP BIOLOGY

Detailed explanation-1: -The genes that are close to each other have a tendency to be more linked than those that are farther. The more the linkage lesser will be the recombination frequency and vice a versa. Hence linkage decreases the frequency of the hybrid.

Detailed explanation-2: -we know that linkage between 2 genes decreases with increase in distance between them. then acoording to this if distance between A and B genes is large then crossing over will occur but some other gene would be linked to A or B near them.

Detailed explanation-3: -Linked selection may increase the survival time by several orders of magnitude. By altering the timescale of stochastic loss, it can therefore affect the dynamics at the focal site to an extent that is of evolutionary importance, especially in small populations.

Detailed explanation-4: -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%.

Detailed explanation-5: -In linkage, two or more genes linked together are always inherited together in the same combination for more than two generations, whereas in recombination the genetic material is exchanged between different organisms which leads to the production of offsprings with the combination of traits.