Suppose Both the Father and the Mother Are "Heterozygous" for the Gene

question 148

Multiple Choice

Suppose both the father and the mother are "heterozygous" for the gene that controls ability to curl the tongue lengthwise, and this gene is dominant. What can we predict about their children?

• A) All will be heterozygous for the ability to curl.
• B) All will be homozygous for the ability to curl.
• C) All will be homozygous for the inability to curl.
• D) They may be homozygous or heterozygous for ability to curl, or homozygous for inability.

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Definitions:

Operant Conditioning

A training technique in which the likelihood of a behavior is changed through the use of incentives or consequences.

Extinction

In psychology, the gradual weakening and eventual disappearance of a learned response when it is no longer reinforced.

Partial-Reinforcement Schedule

In operant conditioning, a strategy in which a behavior is reinforced intermittently, often resulting in more resistant and persistent responses.

Internal-Reinforcement Schedule

A strategy of self-management where individuals control their own rewards or punishments to modify behavior.