What Is the Probability That Individual "A" in the Pedigree

question 21

Multiple Choice

What is the probability that individual "A" in the pedigree below is homozygous by descent?

• A)1/8
• B)1/16
• C)1/32
• D)1/64
• E)1/256

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Definitions:

Systematic Desensitization

A behavioral therapy technique aimed at reducing phobic or anxiety responses through gradual exposure to the feared object or situation, combined with relaxation exercises.

Contingency Contract

A behavioral intervention technique that involves a formal agreement between two parties to reinforce desired behaviors with rewards or consequences.

Token Economy

A system of behavior modification based on the systematic reinforcement of target behavior through the exchange of tokens that can be exchanged for other reinforcements.

Stimulus Satiation

A decrease in responsiveness to a stimulus after repeated presentations.