Gene Pool - All of the different alleles present in an interbreeding population, Allele - Different variations of the same gene, Fitness - Measure of how well an organism can survive and reproduce in its habitat, Selection Pressure - Anything in the environment that favours one phenotype over another eg. predators, hot climate, disease, Natural Selection - Increased frequency of alleles in a population that code for traits that increase survival, Directional Selection - Natural selection that favours one extreme phenotype, Disruptive Selection - Natural selection that favours two opposite extreme phenotypes, Stabilizing Selection - Natural selection that favours the average middle phenotype, Gene Flow - Movement of organisms between gene pools aka. migration, Immigration - Movement of organisms into a gene pool bring new alleles with them, Emigration - Migration of organisms out of a gene pool take alleles with them, Genetic Drift - Random chance events that remove alleles from a gene pool, Fixed Allele - An allele that has become 100% of the genetic variation in a gene pool, Lost Allele - Allele that has been completely removed from a gene pool, Founders Event - When a small subsample of a larger gene pool starts a new smaller gene pool with less genetic diversity, Bottleneck Effect - When a large gene pool almost goes completely extinct and loses alleles in the process, Sexual Selection - Non random mating due to preference for "sexy" traits that increase likelihood of mating and reproducing, Genetic Variation - The variety of different alleles present in a gene pool, Mutation - Permanent change to the base pair sequence of a gene that can make completely new alleles,

Evolution Processes

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