What Ratios of These Three Tetrads Would You Expect to See

question 9

Essay

What ratios of these three tetrads would you expect to see if two genes are linked? Why is each type of tetrad more or less common? What ratios would you expect to see if the two genes are unlinked? Why?

---

Definitions:

Fixed Genetic Locus

A specific location on a chromosome where the genetic variation has become identical across all members of a population due to evolutionary processes.

Allele

A variant of a gene that occurs due to mutation and is located at an identical location on a chromosome, representing one of two or more possible versions.

Genetic Drift

A mechanism of evolution that results in the change of the frequency of alleles in a population due to random sampling of organisms.

Evolution

The process by which different kinds of living organisms are thought to have developed and diversified from earlier forms during the history of the earth.