The Pedigree Below Shows the Inheritance Pattern of a Rare

question 34

Multiple Choice

The pedigree below shows the inheritance pattern of a rare X-linked allele for one family. The filled in circles and squares show affected individuals. What is the probability of individual III-2 being born female and affected?

• A) 1/2
• B) 1/3
• C) 1/4
• D) 0

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Definitions:

Histidine

An essential amino acid in humans, involved in the growth and repair of tissues and the production of histamine.

Organic Products

Compounds containing carbon that are produced as a result of organic reactions.

Amino Acid Analyzer

A device that is used for the identification and quantification of amino acids in a sample, typically using chromatographic techniques.

Amino Acids

Organic compounds containing both amino and carboxyl groups, serving as the building blocks of proteins.