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6 Cards in this Set
- Front
- Back
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Gene Interaction |
Polygenic traits: -regulated by more than one gene, each gene with it's own alleles. Allele movement looks like dihyrid crosses. Types of polygenic traits: -complementary interaction, suppression epistasis |
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Complementary Interaction |
Two genes interact to produce a phenotype that neither is capable of producing itself. Ex. Chicken combs |
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Comb Phenotype |
R allele - rose comb P allele - pea comb Both P and R - walnut comb Neither P or R - single comb |
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Suppression Epistatis |
One gene masks the expression of another gene. Recognized by showing 3 phenotypes rather than the expected 4. (polygenic) Ex. Mammal coat color. ( cc suppresses all pigments ) |
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Pleiotropy |
One gene affects more than one phenotype |
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Environmental Effects |
Temperature Nutrition pH H2O availability |
