Long-term artificial selection across many generations can result in change in the average value of a trait present in the population even if genetic variation for the trait is absent. Basically, does genetic variation affect the average value of a trait, or does the average value of a trait change without the influence of genetic variation?
Added by Laura A.
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Artificial selection is the process by which humans selectively breed individuals with desired traits to produce offspring with those traits. This process can lead to changes in the average value of a trait in a population over time. Show more…
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