Question

Which of the following statements would be true for a condition that is inherited as an X-linked dominant trait?

O A son can only inherit the condition if his mother has it.
O Both males and heterozygous females with the condition will pass the trait to half of their children.
O A pedigree for a family would show affected individuals in each generation.
O If a father has the condition, all of his daughters will have the condition.

Answer 1

The statement that is true for an X-linked dominant trait is that if a father has the condition, all of his daughters will inherit it, as they receive their father's X chromosome. Therefore, the correct option is D.

Step-by-step explanation:

For a condition that is inherited as an X-linked dominant trait, the correct statement is: If a father has the condition, all of his daughters will have the condition. This is due to the fact that fathers pass their X chromosome to all of their daughters and their Y chromosome to all of their sons. Therefore, if the father has an X-linked dominant condition, he will pass that condition on to all of his daughters, as they will all receive the affected X chromosome.

It is important to note that for X-linked dominant traits, males cannot be carriers as they have only one X chromosome; they are either affected or not. Females can be carriers and may show symptoms if they inherit one affected X chromosome, while still possessing one normal X chromosome.