Most pedigrees showing the hypothetical human trait show the following characteristics:
• Only males are affected.
• Affected fathers always pass the trait to sons.
What is the MOST likely mode of inheritance for this disorder?
A) autosomal recessive
B) autosomal dominant
C) X-linked recessive
D) X-linked dominant
E) Y-linked

Question

Most pedigrees showing the hypothetical human trait show the following characteristics:
 • Only males are affected.
• Affected fathers always pass the trait to sons.
What is the MOST likely mode of inheritance for this disorder?
A) autosomal recessive
B) autosomal dominant
C) X-linked recessive
D) X-linked dominant
E) Y-linked

Quizplus · Accepted Answer

The trait is likely Y-linked because it only affects males and is passed directly from father to son, which is characteristic of Y-linked inheritance.

Most Pedigrees Showing the Hypothetical Human Trait Show the Following