The house finch, Carpodacus mexicanus, is a small bird native to North America that is common in a wide range of habitats including suburban landscapes and cities. These birds are mostly brown and grey, but the face and the breast of the males have bright colors. These bright colors range from yellow, to orange, to deep red, and, finally, to every shade in between. The richness of the color in male house finches depends on their diets. Studies have shown that male house finches who eat seeds rich in a type of pigment called carotenoids have color patches that are deep orange to deep red. Male house finches whose diets are low in carotenoids have color patches that fall in the yellow or pale orange category. The amount of carotenoids in the diet of house finches is an example of an imcomplete dominance, a bell curve, or an enviormental effect on the phenotype of the finches? Since there are many possible shades of color that can occur on the feathers of male house finches, this is an example of continous variation, codominance, or pleitropy? .
The house finch, Carpodacus mexicanus, is a small bird native to North America that is common in a wide range of habitats including suburban landscapes and cities. These birds are mostly brown and grey, but the face and the breast of the males have bright colors. These bright colors range from yellow, to orange, to deep red, and, finally, to every shade in between. The richness of the color in male house finches depends on their diets. Studies have shown that male house finches who eat seeds rich in a type of pigment called carotenoids have color patches that are deep orange to deep red. Male house finches whose diets are low in carotenoids have color patches that fall in the yellow or pale orange category. The amount of carotenoids in the diet of house finches is an example of an imcomplete dominance, a bell curve, or an enviormental effect on the phenotype of the finches? Since there are many possible shades of color that can occur on the feathers of male house finches, this is an example of continous variation, codominance, or pleitropy? .
Human Biology (MindTap Course List)
11th Edition
ISBN:9781305112100
Author:Cecie Starr, Beverly McMillan
Publisher:Cecie Starr, Beverly McMillan
Chapter23: Principles Of Evolution
Section: Chapter Questions
Problem 2CT
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The house finch, Carpodacus mexicanus, is a small bird native to North America that is common in a wide range of habitats including suburban landscapes and cities. These birds are mostly brown and grey, but the face and the breast of the males have bright colors. These bright colors range from yellow, to orange, to deep red, and, finally, to every shade in between. The richness of the color in male house finches depends on their diets. Studies have shown that male house finches who eat seeds rich in a type of pigment called carotenoids have color patches that are deep orange to deep red. Male house finches whose diets are low in carotenoids have color patches that fall in the yellow or pale orange category.
The amount of carotenoids in the diet of house finches is an example of an imcomplete dominance, a bell curve, or an enviormental effect on the phenotype of the finches?
Since there are many possible shades of color that can occur on the feathers of male house finches, this is an example of continous variation, codominance, or pleitropy? .
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