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Biological Evolution: Unity and Diversity: Evidence for Evolution
Effect of Natural Selection on Phenotypes
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Effect of Natural Selection on Phenotypes
Have you ever wondered why some animals have spots, stripes, or specific colors? These visible traits, called phenotypes, are shaped by natural selection. A phenotype is how an organism's genes appear on the outside, like fur color, beak shape, or body s...
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Transcript
Natural selection does not directly act on genes. Instead, it acts on phenotypes, the physical traits an organism shows.
Imagine two rabbits in the snow: one white, one brown. A fox can easily spot the brown rabbit over the white. As a result, more white rabbits survive and reproduce, passing on their genes.
Some genotypes, like homo...
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