Following a Gene Duplication Event,the Additional Copy of the Gene

question 32

Essay

Following a gene duplication event,the additional copy of the gene is identical to the original copy.
a)Does the duplication event,by itself,create a novel function?
b)How does a gene duplication event promote the creation of a gene with a novel function?

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Definitions:

Spontaneous Recovery

The reappearance of a previously extinguished response after a period of no exposure to the conditioned stimulus.

Stimulus Discrimination

The learned ability to differentiate between similar stimuli, responding only to the original conditioned stimulus and not to similar ones.

Stimulus Generalization

A psychological phenomenon in which a response to a specific stimulus becomes associated with other stimuli that are similar.

Conditioned Response

A learned reaction to a previously neutral stimulus that has become associated with an unconditioned stimulus.