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Definition
| A group of organisms that tend to choose mates from within the group. |
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Definition
| Four mechanisms that can cause changes in allele frequencies from one generation to the next: mutation, natural selection, genetic drift and gene flow. |
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Definition
| Patterns of mate choice that influence the distributions of genotype and phenotype frequencies. |
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Definition
| Mating between biologically related individuals. |
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Definition
| A discrete genetic trait in which there are at least two alleles at a locus having frequencies greater than .01. |
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Definition
| An organism's probability of survival and reproduction. |
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Definition
| Selection for the heterozygote and against the homozygotes, (the heterozygote is most fit). |
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Definition
| Selection against extreme values, large or small, in a continuous trait. |
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Definition
| Selection against one extreme in a continuous trait and/or selection for the other extreme. |
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Definition
| A mechanism for evolutionary change resulting from the random fluctuations of gene frequencies from one generation to the next. |
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Definition
| A type of genetic drift caused by the formation of a new population by a small number of individuals. |
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Term
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Definition
| A mechanism for evolutionary change resulting from the movement of genes from one population to another. |
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