Term
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Definition
| A form of natural selection in which the entire curve moves; occurs when individuals at one end of a distribution curve have higher fitness than individuals in the middle or at the other end of the curve. (p 398) |
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Term
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Definition
| A form of natural selection by which the center of the curve remains in its current position; occurs when individuals near the center of a distribution curve have higher fitness than individuals at either end. (pg 399) |
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Term
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Definition
| A form of natural selection in which a single 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. (pg 399) |
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Term
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Definition
| A random change in allele frequencies that occurs in small populations. (pg 400) |
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Term
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Definition
| A change in allele frequencies as a result of the migration of a small subgroup of a population. (p. 400) |
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Term
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Definition
| The principle that allele frequencies in a population will remain constant unless one or more fators cause the frequenies to change. (pg 401) |
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Term
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Definition
| A situation in which allele frequencies remain constant. (pg. 401) |
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