Practice Quiz

MCAT Biology

Category - Biology

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A pedigree is a diagram that traces the inheritance of a trait through a family. Which of the following patterns is typical in a pedigree for an autosomal dominant trait?
  1. The trait affects only males.
  2. The trait appears in every generation.
  3. The trait appears in only one-fourth of the individuals.
  4. The trait affects all the individuals of the second generation.
Explanation
Answer: B - The trait appears in every generation.
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