Question

Achondroplasia, a condition that causes certain types of dwarfism, is a genetic disorder with dominant inheritance (A). Which of the following represents the gametes an individual heterozygous for achondroplasia would produce?

• A. All Aa
• B. All A
• C. 50% A and 50% a
• D. All a
• E. None of the above

Answer 1

Answer: (C)

50% A and 50% a

Achondroplasia is a type of genetic disorder in which the ossification of cartilage at the end of long bones causes dwarfism. According to the question, the individual is heterozygote (Aa) so the gametes produce will be two type with 50% of A and 50% of a.

Thus the correct answer is option C.