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Mechanisms of Evo
Make-up Quiz 1
Term | Definition |
---|---|
Stabilizing Selection | most common form of natural selection in which organisms with extreme expressions of a trait are removed. Can be expressed on a graph. |
Directional Selection | Shift of population toward an extreme version of a beneficial trait. Can be expressed on a graph. |
Founder Effect | Occurs when a new colony is started by a few members of the original population. |
Bottleneck Effect | process in which a large population declines in number, then rebounds. |
Allele Frequency | Proportion of different alleles of a particular gene in a given population. |
Gene pool | the set of all genes, or genetic information, in any population, usually of a particular species. |
Disruptive Selection | Process by which individuals with average traits are removed, creating two populations with extreme traits. Can be expressed on a graph. |
Gene Flow | the transfer of alleles or genes from one population to another. |
Mutation | permanent change in a cell's DNA, ranging from changes in a single base pair to deletions of large sections of chromosomes. |