Two Genes That Evolved from the Same Common Ancestral Gene

question 43

Multiple Choice

Two genes that evolved from the same common ancestral gene, but are now found as homologs in different organisms, are called:

• A) orthologs.
• B) paralogs.
• C) heterologs.
• D) pseudologs.
• E) lincolnlogs.

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Definitions:

Conditioned Emotional Response

An emotional reaction acquired through classical conditioning, where a previously neutral stimulus is paired with an emotionally charged stimulus.

Conditioned Stimulus

A previously neutral stimulus that, after becoming associated with an unconditioned stimulus, elicits a conditioned response.

Little Albert

An early 20th-century experiment by John B. Watson and Rosalie Rayner, demonstrating classical conditioning in a young child.

White Rat

Commonly used in psychological experiments, particularly in the study of behavior, learning, and conditioning; often associated with B.F. Skinner's work.