Evolutionary Biology - created from Mind Map

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4 Postulates of Evolution

Origins of Variation

Types of Selection

Limits on Evolution

Variation in Populations

Heritability of Variation

More Organisms produced than survive

Selection of advantageous traits

Mutation (Increases)

Selection (Reduces)<br><br><ul><li>Differential Reproductive Success - Changes allele frequencies at different loci

Reduces genetic variability</li></ul>

Other (Increases)

Heterozygote advantage

Natural Selection

Frequency Dependent

Produces differences in trait/allele freq. within genererations

Hybridisation

Horizontal Gene Transfer

Gene Flow

Recombination

Genetic Drift

Inbreeding

Migration

Directional

Stabilising

Disruptive

Oscillating directional selection

Genetic Correlations

Produces changes between generations