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8 Cards in this Set
- Front
- Back
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Altruism |
Helpful behavior that lowers the helper's reproductive success while increasing the reproductive success of the individual being helped. |
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Direct Selection |
The process of natural selection that occurs when hereditarily distinctive individuals differ in the number of surviving offspring they produce or number of genes they pass on to subsequent generations. |
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Direct fitness |
A measure of the reproductive or genetic success of an individual based on the number of its offspring that live to reproduce. |
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Kin (or indirect) selection |
The process that occurs when hereditarily distinctive individuals differ in the number of nondescendant relatives (not their offspring) they help survive to reproduce. |
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Indirect Fitness |
A measure of the genetic success of an altruistic individual based on the number or relatives (or genetically similar individuals) that the altruist helps reproduce that would not otherwise have survived to do so.
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Inclusive fitness |
A total measure of an individual's contribution of genes to the next generation by direct and/or indirect selection.
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Group selection |
The process that occurs when groups differ in their collective attributes and the differences affect the survival chances of the groups.
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Behavioral strategy |
An inherited behavior pattern that is in competition with other hereditarily different behavior patterns in ways that have the potential to affect an individual's inclusive fitness. An example of a behavioral strategy is the willingness of individuals to assist close relatives even though their help reduces their direct fitness. |
