One of Your Roommates Is an Extravert and the Other

question 41

Multiple Choice

One of your roommates is an extravert and the other is an introvert.When you come home, you slam the door, surprising them both.According to biological trait theory, who would show more physiological arousal to this event?

• A)the extravert
• B)the introvert
• C)They would both show the same level of arousal.
• D)This theory does not allow one to predict the outcome.

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Definitions:

Balanced Polymorphisms

A genetic equilibrium where two or more alleles persist in a population because they each confer some selective advantage that promotes survival.

Frequency-Dependent Selection

Natural selection in which a trait’s adaptive value depends on its frequency among members of a population.

Recessive Allele

An allele that produces its characteristic phenotype only when its paired allele is identical, often masked by a dominant allele in a heterozygote.

Dominant Allele

An allele that expresses its phenotype even in the presence of a recessive allele within a diploid organism.