The Difference in Mode of Inheritance Between Huntington Disease and Cystic

question 26

Multiple Choice

The difference in mode of inheritance between Huntington disease and cystic fibrosis is that

• A) Huntington disease only affects men and cystic fibrosis affects both sexes.
• B) Huntington disease skips generations and only affects children, whereas cystic fibrosis can strike at any age and never skips generations.
• C) Huntington disease does not skip generations but cystic fibrosis can.
• D) A person with Huntington disease can have unaffected parents, but a person with cystic fibrosis must have an affected parent.
• E) Huntington disease affects females and cystic fibrosis affects males.

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