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Definition
| change in a kind of organism over time; process by which modern organisms have descended from ancient organisms |
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| Well tested explanation that unifies a broad range of observations |
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Definition
| Preserved remains or evidence of an ancient organism |
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| Selection by humans for inbreeding of useful traits from the natural variation among different organism |
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Definition
| Competition among members of a species for food, living space, and the other necessities of life |
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| Ability of an organism to survive and reproduce in its environment |
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| Inherited characteristic that increases an organisms chance of survival |
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Definition
| Process by which individuals that are better suited to their environment survive and reproduce most successfully also called natural selections |
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| Descent with modification |
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Definition
| Principle that each living species has descended with changes from other species over time |
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Definition
| Principle that all living things were derived from common ancestors |
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| Structures that have different mature forms in different organisms but develop from the same embryonic tissues |
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Definition
| Combined genetic info of all the members of a particular population |
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Definition
| Number of times an allele occurs in a gene pool compared with the number of times other alleles occur |
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Definition
| Trait controlled by two or more genes |
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Definition
| Form of natural selection in which the entire curve splits into two, occurs when individuals at the upper and lower ends of a distribution curve have higher fitness than individuals near the middle |
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Definition
| Random changes in allele frequencies that occurs in small populations |
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Definition
| Change in allele frequencies as a result of the migration of a small subgroup of a population |
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Term
| Hardy- Weinburg Principle |
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Definition
| Principle that allele frequencies in a population will remain constant unless one or more factors cause the frequencies to change |
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Definition
| Situation in which allele frequencies remain constant |
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Definition
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| Separation of species or populations so that they cannot interbreed and produce fertile offspring |
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| Form of reproductive isolation in which two population are separated physically by geographic barriers such as rivers mountains or stretches of water. |
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Term
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Definition
| Form of reproductive isolation in which two populations reproduce at different times. |
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