Question

Hemophilia A is an X-linked recessive disease. If a mother without the disease and a father without the disease have one son diagnosed with hemophilia, what is the probability that a future daughter they have together will also be afflicted with hemophilia?

%

Answer 1

No chance whatsoever that she will have a severely afflicted daughter.

0%

Step-by-step explanation:

Rare X-linked illness, hemophilia A, affects a small percentage of the population. Because it is recessive, it only manifests in females when both X chromosomes are present. However, in men, the presence of only one X chromosome is sufficient to cause the condition.

Since X-linked recessive traits are passed down from mothers to their daughters, if a woman has a son who is afflicted by the illness, then her daughter will also be a carrier. Because of this, there is no certainty that the daughter will develop hemophilia A, although she may be a carrier.