Chapter 25 - 1 204-325 2 Summary of the Last Lecture h h...

Info iconThis preview shows pages 1–5. Sign up to view the full content.

View Full Document Right Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: 1 204-325 2 Summary of the Last Lecture h h Mutation is the source of all variation but contribute Mutation is the source of all variation but contribute little to the changes in allelic frequencies. little to the changes in allelic frequencies. h h Genetic drift is the allelic frequency change due to Genetic drift is the allelic frequency change due to the small effective population size. It leads to loss of the small effective population size. It leads to loss of genetic variation within a population and to genetic variation within a population and to divergence among populations. divergence among populations. h h Gene flow due to migration has the opposite effects. Gene flow due to migration has the opposite effects. h h Selection is measured by the relative reproductive Selection is measured by the relative reproductive success of the genotypes. It results in different success of the genotypes. It results in different genetic changes depending on pattern of selection. genetic changes depending on pattern of selection. h h Nonrandom mating reduces effective population size Nonrandom mating reduces effective population size and change genotypic and allelic or only allelic and change genotypic and allelic or only allelic frequencies. Inbreeding increases homozygosity. frequencies. Inbreeding increases homozygosity. 3 1. Patterns of DNA Substitutions 2. Evolution and Speciation 3. Molecular Clock 4. Molecular Phylogeny Today’s Topics 4 Topic 1 Patterns Patterns of DNA of DNA Substitutions Substitutions 5...
View Full Document

This note was uploaded on 04/29/2008 for the course BIO SCI 325 taught by Professor Zang during the Spring '08 term at Wisconsin Milwaukee.

Page1 / 35

Chapter 25 - 1 204-325 2 Summary of the Last Lecture h h...

This preview shows document pages 1 - 5. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online