Question

Which of the following is a dominant genetic trait in humans?

• A. Alkaptonuria
• B. Sickle cell anemia
• C. Huntington’s disease
• D. Phenylketonuria

Hint:

Huntington’s = Classic autosomal dominant disorder PKU, Sickle cell, Alkaptonuria = Recessive

Answer 1

The Correct Option is C

Concept: Genetic disorders are classified based on inheritance:
• Autosomal dominant → One defective allele is sufficient
• Autosomal recessive → Two defective alleles required

Step 1: Analyze each disorder.

• Alkaptonuria → Autosomal recessive
• Sickle cell anemia → Autosomal recessive
• Huntington’s disease → Autosomal dominant
• Phenylketonuria → Autosomal recessive

Step 2: Final conclusion.
Thus, the dominant genetic trait is: \[ Huntington’s disease \]