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Definition
| one long continuous piece of double helical DNA containing many genes |
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| specific piece of DNA on a chromosome that is used as a template to make RNA |
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| all the alleles that exist in a population |
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| the movment of genes from one population to another |
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| the movment of individuals from one population into the territory of another |
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Definition
| chance alteration of allele frequencies in a population |
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| differnt versions of a gene that prduce slightly differnt products |
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| all members of a species that live in a defined geographic region at a given time |
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| change of allele frequencies in a population over a relativley short period of time |
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| evolution that results in formation of new species or other groupings of living things |
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| alteration in organisms DNA'generally has no effect or a harmful effect, but beneficial or "adaptive" mutations are indeispesable to evoltuion |
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Definition
| chance alteration of gene frequencies in a population |
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Definition
| change in allele frequencies in a population due to chance following a sharp reduction in populations size |
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| when small subpopulation migrates to a new area to start a new population, it is likely to bring with it only a portion of original gene pool |
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| form of natural selection that produces differnetial reproductive success-based on differential success in obtaining mating partners |
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| process in which adaptions of organisms to their enviorment selects those traits that will be passed on with greater frequency from one generation to the next |
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Definition
| individuals who possess extreme values of characteristic are selected against and die or fail to reproduce |
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| one of the extremes is more suited to the enviorment than the others-moves a characteristic towards one extreme |
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Definition
| individuals with average coloration are selected against and die-moves characteristics towards both extremes |
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