Question

Given below is a pedigree chart showing the inheritance of a certain sex-linked trait in humans.

The trait traced in the above pedigree chart is

• A. Dominant X-linked
• B. Recessive X-linked
• C. Dominant Y-linked
• D. Recessive Y-linked

Answer 1

The correct option is A Dominant X-linked

As there is no skipping of generation, the trait should be dominant. And as there is no father to son transmission it can not be Y linked. So the trait is X linked dominant.