What Is Random Genetic Drift?

The Genealogy of Genes

How Strong Is Genetic Drift?

• Populations that change in size

Drift and Genetic Variation within Species

• Estimating population size

Genetic Drift and Natural Selection

• Crossing an adaptive valley by drift
• The fate of beneficial mutations in large populations

The Evolution of Differences among Species

• The neutral theory of molecular evolution

Searching the Genes for Signatures of Adaptation

• Synonymous versus nonsynonymous differences
• The MK test
• Divergence among populations