Glucose-6-Phosphate Dehydrogenase Deficiency (G6PD) Is Inherited as an X-Linked Recessive

question 56

Multiple Choice

Glucose-6-phosphate dehydrogenase deficiency (G6PD) is inherited as an X-linked recessive allele in humans. A woman whose father suffered from G6PD marries a normal man. What proportion of their sons is expected to be G6PD?

• A) 100%
• B) 1/4
• C) 1/2
• D) zero

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Definitions:

Precipitation Reaction

A precipitation reaction is a chemical reaction in which soluble ions in separate solutions react to form an insoluble compound that settles out of solution as a solid precipitate.

Limiting Reactant

The limiting reactant is the substance in a chemical reaction that is completely consumed first, thereby determining the maximum amount of product that can be formed.

Wax

A diverse class of organic compounds that are malleable at slightly higher temperatures than room temperature and mainly consist of hydrocarbons.

Theoretical Yield

The maximum amount of product that could be formed from given amounts of reactants in a chemical reaction, assuming no losses.