Genetic Drift LIFS 691 Advanced Evolution. Genetic Drift Random changes in allelic frequencies arising from stochastic processes in populations of finite.

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Genetic Drift LIFS 691 Advanced Evolution

Genetic Drift Random changes in allelic frequencies arising from stochastic processes in populations of finite size.

Causes of Genetic Drift independent assortment of alleles random variation in survival random variation in mating success random variation in fecundity

Computer Simulations of Genetic Drift Small Populations N = 9 (per population) Large Populations N = 50 (per population) Generation Allelic Frequency (p) Hartl & Clark (1989), Principles of Population Genetics

Experimental Studies of Genetic Drift Locus controlling color (2 alleles) in flour beetles (Tribolium spp.) Generation N = 10 (per population) N = 100 Allelic Frequency (p) Rich et al. (1979), Evolution 33: