Imagine a Human Protein Containing 33 Repeats of a Simple

question 49

Short Answer

Imagine a human protein containing 33 repeats of a simple domain arranged in tandem. In contrast, a homolog found in bacteria contains only one domain. What is the minimum number of duplication events that can account for the evolution of this protein since our divergence from bacteria? Write down the number as your answer, e.g. 200.

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Definitions:

Behavioral Contrast

A phenomenon where the rate of response to a stimulus changes significantly due to the introduction of a reinforcement or punishment to another stimulus.

Discrimination Learning

A cognitive process where an individual learns to respond differently to various stimuli that are not identical.

Excitatory Generalization

The process whereby a conditioned response is observed not only to the conditioned stimulus but also to stimuli that are similar to the conditioned stimulus.

Inhibitory Generalization

Inhibitory generalization refers to the process whereby learned inhibition to a certain stimulus is generalized to other similar stimuli.