Question

A genetic disorder that presents only in males is

• A. Maternally inherited
• B. A Y-linked trait
• C. An autosomal recessive trait
• D. An X-linked recessive trait
• E. An X-linked dominant trait

Answer 1

The correct option is B A Y-linked trait

Since Y chromosome is present in males only, Y-linked disorders are present exclusively in males only. Both males and females have X chromosome and hence, X-linked recessive and dominant traits are present in both males and females. Autosomal traits are inherited independently of the sex of individuals. Thus, the correct answer is option B.