Complex Phenotypes That Are Shaped by More Than One Gene

question 20

Multiple Choice

Complex phenotypes that are shaped by more than one gene and also by some aspect of an individual's environment represent a(n)

• A) multifactorial trait.
• B) polygenic trait.
• C) codominant trait.
• D) autosomal trait.
• E) recessive trait.

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Definitions:

Reinforcement

In behavioral psychology, it refers to any stimulus which strengthens or increases the probability of a specific response.

Contingency Responding

A learning process where the learner adjusts behaviors based on the presence of specific stimuli and the consequences that follow those behaviors.

Instrumental Conditioning

A learning process in which behavior is modified through the use of rewards or punishments.

Fixed-Ratio

A schedule of reinforcement where a response is reinforced only after a specified number of responses, leading to a high and steady rate of response.