Evolutionary Trends I

              • Adaptations
              • Convergence
              • Extinction
              • Macro- & Microevolution
              • Mutations
              • Selection
              • Speciation

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          Aspects of Macroevolution:WIKI

          Not Adaptive Selection
        • Genetic drift: random changes in gene frequency (allele frequencies) have greater effects on small populations. [LINK]
        • Founder effect: (on isolated islands) the initial founding population has a subset of the alleles of the parent population [LINK]
        • Bottleneck effect: species crashes to very small population size, producing lower genetic diversity after population recovery [LINK]

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