AP PSYCHOLOGY

Detailed explanation-1: -Most traits are determined by more than one gene. For example, skin color and height are determined by many genes. Some phenotypes however, are determined by a single gene. We will explore some of these single gene traits in the laboratory.

Detailed explanation-2: -Unlike monogenic traits, complex trait variation is not entirely explained by one or a small number of genes but results from a complex mixture of inherited and environmental factors.

Detailed explanation-3: -Single-gene traits include some of the most observable physical traits in humans, like eye color, widow’s peak hairline, earlobe type (attached versus detached), presence of freckles or dimples, or the ability to roll your tongue.

Detailed explanation-4: -Traits that are determined by a single gene are of five main types: Y-linked, X-linked dominant, X-linked recessive, autosomal dominant, and autosomal recessive.