PCB 4674 Chapter Notes - Chapter 7: Genetic Drift, Distant Relatives, Allele Frequency
22 Sep 2016
School
Department
Course
Professor
Document Summary
We have considered what might happen when some of the hw assumptions are relaxed: no selection, no new variation (migration, mutation, no genetic drift (finite population size) We will now look at the final assumption : that all mating is random. The fact is, of course, in virtually every natural population: mating is not random. There are many examples of nonrandom mating, and we will look at different types throughout the course. For now, we will consider one of the most common types: and one that readily shows the effects. Inbreeding: inbreeding is simply defined as mating between genetic relatives the closeness of the relatedness does matter. Hw predicts 0. 25 aa, 0. 50 aa, and 0. 25 aa: in a pop of 1000: 250 aa, 500 aa, 250 aa, if all mating is self. Aa will produce 100% aa aa will produce 100% aa. Aa will produce 25% aa, 50% aa, 25% aa: among 1000 offspring .
