Professor Wen Is Lecturing His Class About Huntington's Disease

question 118

Multiple Choice

 Professor Wen is lecturing his class about Huntington's Disease. He tells the class that it is a genetic disorder caused by _____.

• A) a recessive gene on the X chromosome
• B) duplication of chromosome 21
• C) genes passed down from the father
• D) a dominant gene on chromosome 4

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