Question

which outcome could be expected in a family that carries an x - linked recessive trait?
○ more males than females express the trait.
○ an equal number of males and females express the trait.
○ more females than males express the trait.

Explanation:

For X - linked recessive traits, males have one X and one Y chromosome. If the X chromosome carries the recessive allele for the trait, the male will express the trait because there is no dominant allele on the Y to mask it. Females have two X chromosomes, so they need two copies of the recessive allele (one on each X) to express the trait, which is less likely. So more males than females express X - linked recessive traits.

Answer:

A. More males than females express the trait.