Comparisons of Traits in Identical and Fraternal Twins Are Useful

question 16

Multiple Choice

Comparisons of traits in identical and fraternal twins are useful because they:

• A)allow estimates of the number of genes affecting a complex trait.
• B)reveal the extent of genotype-by-environment interaction in causing phenotypic variation.
• C)reveal the relative importance of genes and environment in causing phenotypic variation.
• D)None of the answer options is correct.

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Definitions:

Dramatic

Characterized by exciting, emotional, or unexpected events or circumstances.

Antisocial Personality Disorder

A mental health disorder characterized by a long-term pattern of manipulating, exploiting, or violating the rights of others.

Emotional Intelligence

The capacity to identify, comprehend, control, and logically interact with one's own emotions and those of other people.

Lower Fearlessness

A decreased tendency or capacity to experience fear, which might influence an individual's approach to risky or threatening situations.