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Population Genetics (Gene pool (HW equation (The frequency of the dominant…
Population Genetics
Gene pool
Gene Pool: Allele & Genotype frequencies
Hardy-Weinberg equation(predicts an equilibrium-unchanging allele and genotype frequencies from generation to generation-if certain conditions exist in a population)
Relationship between Allele & Genotype frequencies given HW
HW equation
The frequency of the dominant allele is represented by p
The frequency of the recessive allele is represented by q
Thus p+q=1
Therefore (p+q)2=12;
And p2+2pq+q2=1
p2= genotypic frequency of RR
2pq= genotypic frequency of Rr
q2= genotypic frequency of rr
HW: Genetic equilibrium
Microevolution(Changes in a population’s gene pool from generation to generation)
Mutation
(Source of all new alleles)
Polymorphism
Genetic drift
Nonrandom mating
Sexual Selection
Migration
Gene flow
Natural Selection: Microevolution to Speciation
Artificial selection
Patterns of selection
Patterns of natural selection
Directional Selection
Stabilizing selection
Disruptive selection
Mutation + selection
Natural Selection or Not?
