A Person Who Is Heterozygous for a Particular Trait Has

question 181

Multiple Choice

A person who is heterozygous for a particular trait has:

• A)an extra gene (allele)
• B)two similar genes (alleles)
• C)only one gene (allele)
• D)two different genes (alleles)

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Definitions:

Conditioned Stimulus

An initially neutral stimulus that becomes associated with an unconditioned stimulus, leading to a conditioned response in classical conditioning.

Classical Conditioning

An instructional process where two stimuli are frequently paired together; the response, initially triggered by the second stimulus, is subsequently drawn by the first stimulus alone.

Extinction

In psychology, the gradual weakening and disappearance of a conditioned response when the conditioned stimulus is repeatedly presented without the unconditioned stimulus.

Conditioned Stimulus

A stimulus that was originally neutral but, after association with an unconditioned stimulus, leads to eliciting a conditioned response.