Question

if only males are affected in a pedigree, what is the most likely inheritance pattern for the trait?
autosomal recessive
x - linked recessive
autosomal dominant

Explanation:

• Autosomal recessive: Both males and females can be affected.
• X - linked recessive: Males are more likely to be affected as they have only one X chromosome. Females need two copies of the recessive allele to be affected.
• Autosomal dominant: Both males and females can be affected.

Answer:

X - linked recessive