You Are Studying the DNA of a Person Who You

question 17

Multiple Choice

You are studying the DNA of a person who you know has two defective copies of the gene that encodes phenylalanine hydroxylase. You are surprised to find that this person also carries two defective copies of the gene for homogentisic acid oxidase. What disease symptoms will this person exhibit? (Assume pathway intermediates are not available from sources outside the phenylalanine breakdown pathway.)

• A) This person will exhibit symptoms of alkaptonuria.
• B) This person will exhibit symptoms of tyrosinosis.
• C) This person will exhibit symptoms of phenylketonuria.
• D) This person will exhibit symptoms of alkaptonuria and phenylketonuria.
• E) This person will be phenotypically normal.

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Definitions:

Hypnotism

A trance-like state resembling sleep, typically induced by a therapist by focusing a patient's attention and increasing their responsiveness to suggestions.

Sympathetic Listening

An approach to listening where the listener focuses on understanding the speaker's feelings and emotions.

Humanitarian Approach

An approach that emphasizes the welfare and dignity of people, typically used in contexts of aid and development to alleviate suffering and promote human rights.

Mental Hospitals

Healthcare facilities specializing in the care and treatment of patients with psychiatric disorders.