What Genetic Disorder Is Associated with the Lack of an Enzyme

question 17

Multiple Choice

What genetic disorder is associated with the lack of an enzyme necessary for the normal metabolism of the amino acid phenylalanine?

• A) Phenylketonuria (PKU)
• B) Marfan syndrome
• C) Huntington disease
• D) Sickle cell disease
• E) Cystic fibrosis (CF)

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Definitions:

Chi-Square Value

A statistic that measures the difference between observed frequencies and the frequencies expected under a specific hypothesis.

Observed Frequency

The actual count of instances or occurrences of a particular category or outcome in a set of data.

Expected Frequency

The number of times an outcome is predicted to occur in a statistical experiment, based on the probabilities of each outcome.

Rule Of Five

A statistical rule stating that if a dataset contains more than five times the sample size of another, the larger can be considered approximately normal in distribution.