What Is the Most Likely Reason That Alkaptonuria Is a Recessive

question 25

Multiple Choice

What is the most likely reason that alkaptonuria is a recessive disease?

• A) The mutant phenotype arises from a change in the protein's amino acid sequence.
• B) More than half the typical amount of homogentisic acid oxidase is needed to break down the toxin by-product.
• C) Having half the typical amount of homogentisic acid oxidase is sufficient to break down the toxin by-product.
• D) Homogentisic acid oxidase occurs early in the metabolic pathway.
• E) Homogentisic acid oxidase occurs late in the metabolic pathway.

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