How Many Distinct Phenotypic Categories Should Be Observed for a Polygenic

question 38

Multiple Choice

How many distinct phenotypic categories should be observed for a polygenic trait in humans that results from segregation of additive alleles for 10 genes?

• A) 5
• B) 20
• C) 21
• D) 10
• E) 4

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Definitions:

Ethological Theory

An approach in psychology that emphasizes the evolutionary and biological roots of behavior, particularly how behavior enhances survival and reproduction.

Comforted By A Stranger

A scenario where an individual, often a child, receives consolation or reassurance from someone they do not know well or at all, indicating their trust or social behavior.

Securely Attached

Refers to a healthy attachment style typically observed in children who feel confident and reassured that their caregivers are reliably available and responsive to their needs.