Which definition best describes polygenic traits? A. Traits that are carried on linked genes
B. Traits that express both alleles of a gene pair
C. Traits that affect several features
D. Traits that are controlled by multiple genes
Which definition best describes polygenic traits?
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The correct answer is D. Traits that are controlled by multiple genes.
Polygenic traits are characteristics that are influenced by multiple genes, rather than being determined by a single gene. This means that the expression of these traits involves the additive effects of several genes, which often results in a continuous range of variation, such as height or skin color in humans.