Question

A recessive, sex-linked trait in humans is the result of a gene located on the X chromosome. If a man with the trait has children with a woman who neither expresses nor carries the trait, how will the children be affected? a) all of their daughters and none of their sons will express the traitb) half of their daughters and all of their sons will express the traitc) half of their sons will express the trait, but none of their daughters willd) none of their children will express the trait, but their daughters will be carriers

Answer 1

answer and explanation

X-linked recessive traits that is found on the male will result in the X chromosome from the man carrying the trait and so all the offsprings that have the male x chromosome will carry the trait.

therefore non of the sons will carry or express the trait while all the daughters will express the trait

the correct answer is a.

this is because the daughters will have one x from the father and one x from the mother while males will only get the Y chromosome from the father and not the x chromosome