APB - Unit 7.3 - Evolution

There can be no mutations.

There has to be random mating.

There can be no natural selection.

There has to be an extremely large population size.

There can be no gene flow.

Gene flow - immigration into or emigration out of the population

Adaptive evolution - the environment may cause one set of characteristics to be more beneficial

Genetic drift - impacts small populations more and caused by fluctuations in the environment such as droughts or floods that yield big fluctuations in allele frequencies

Founder effect - at least one mating pair of a species arrives in a new location

Bottleneck effect - genetic drift after the population is reduced due to a possible "catastrophe" so that the population that exists is no longer representative of the original population.

Directional selection - one side wins

Disruptive selection - either side wins

Stabilizing selection - middle wins

Hardy-Weinberg equilibrium - What is it, What are the conditions, and how to use it.

We discussed gene flow, adaptive evolution, genetic drift, founder effect, and bottleneck effect.

We discussed directional vs. disruptive vs. stabilizing selection.