Expression of Homeotic Genes

question 3

Multiple Choice

Expression of homeotic genes

• A)assign a unique identity to each segment.
• B)define anterior and psoterior ends of the fly.
• C)control the espression of the segment polarity genes.
• D)subdivide the embryo into a precise number of segments.

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Definitions:

Stimulus Generalization

A psychological phenomenon where a conditioned response begins to occur in response to stimuli that are similar to the conditioned stimulus.

Discriminative Operant

A type of operant conditioning where the organism learns to respond differently to various stimuli depending on whether the behavior will be reinforced.

Anticipatory Contrast

The long-lasting change in response due to an anticipated change in the reinforcement contingency.

Generalization of Inhibition

Generalization of inhibition occurs when an organism learns to suppress a response not only to the conditioned stimulus but also to stimuli that are similar to the conditioned stimulus, demonstrating a broadening of inhibitory control.