You Are Measuring the Trait of Friendliness in a Set

question 168

Multiple Choice

You are measuring the trait of friendliness in a set of 100 monozygotic twins. You notice that for almost all of the twins, when one is high on this measure, the other twin is also high. We would say that the trait of friendliness has

• A) low reaction range
• B) low heritability
• C) high selection pressure
• D) high genetic flow
• E) high concordance

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Definitions:

Pituitary Gland

A small, pea-sized gland located at the base of the brain, critical in controlling growth, metabolism, and reproductive functions.

Ventral Body Cavity

The front portion of the body cavity that houses internal organs, including the thoracic and abdominopelvic cavities.

Hormones

Chemical substances produced by glands, which travel through the bloodstream to affect various parts of the body.