Florida Biology EOC Practice Test 2025 - Free Biology End-of-Course Practice Questions and Study Guide

Question: 1 / 400

Polygenic inheritance refers to:

Genes carried by sex chromosome

Having different alleles for a trait

Traits controlled by more than one gene

Polygenic inheritance refers to traits that are controlled by more than one gene. This means that multiple genes contribute to the expression of a single trait. Option A is incorrect because genes carried by sex chromosomes refer to the mode of inheritance, not the type (polygenic vs. monogenic). Option B is incorrect because having different alleles for a trait does not necessarily mean that the trait is controlled by multiple genes. Option D is incorrect because the expression of traits from both alleles is known as codominance or incomplete dominance, not polygenic inheritance.

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Traits from both alleles being expressed in phenotype of offspring

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