Directional selection When individuals at one end of the curve have a higher fitness than...
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directional selection • When individuals at one end of the curve have a higher fitness than individuals in the middle or at the other end.
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Transcript of Directional selection When individuals at one end of the curve have a higher fitness than...
![Page 1: Directional selection When individuals at one end of the curve have a higher fitness than individuals in the middle or at the other end.](https://reader036.fdocuments.net/reader036/viewer/2022082709/56649f4f5503460f94c71960/html5/thumbnails/1.jpg)
directional selection
• When individuals at one end of the curve have a higher fitness than individuals in the middle or at the other end.
![Page 2: Directional selection When individuals at one end of the curve have a higher fitness than individuals in the middle or at the other end.](https://reader036.fdocuments.net/reader036/viewer/2022082709/56649f4f5503460f94c71960/html5/thumbnails/2.jpg)
stabilizing selection
• When individuals near the center of the curve have higher fitness than individuals at either end of the curve.
![Page 3: Directional selection When individuals at one end of the curve have a higher fitness than individuals in the middle or at the other end.](https://reader036.fdocuments.net/reader036/viewer/2022082709/56649f4f5503460f94c71960/html5/thumbnails/3.jpg)
disruptive selection
• When individuals at the upper and lower ends of the curve have higher fitness than individuals near the middle.
![Page 4: Directional selection When individuals at one end of the curve have a higher fitness than individuals in the middle or at the other end.](https://reader036.fdocuments.net/reader036/viewer/2022082709/56649f4f5503460f94c71960/html5/thumbnails/4.jpg)
genetic drift
• Random change in allele frequency.– Occurs in small populations
![Page 5: Directional selection When individuals at one end of the curve have a higher fitness than individuals in the middle or at the other end.](https://reader036.fdocuments.net/reader036/viewer/2022082709/56649f4f5503460f94c71960/html5/thumbnails/5.jpg)
founder effect
• A situation in which allele frequencies change as a result of the migration of a small subgroup of a population.