Answer:
The correct answer is - option 3.
Explanation:
Hemophilia is a recessive genetic sex linked disorder that is located on the X chromosome and only visible in the present in absence of normal allele of the hemophilia.
If there is normal x chromosome present in a female she will be carrier for the disease while if a male have faulty gene he will be affected. The punnete square is provide for this case.
In the given case, father has a normal X-chromosome. (XY) as he does not hemophilia and as Abigayle have only one faulty gene as she is carrier for the disorder.
A punnett square will explain all possible outcomes:
X YX XX XY (healthy)x Xx xY (carrier or has hemophilia)
Now examine the given statements:
There is a 50 percent chance that a girl will be a carrier.
(given a girl, 25% out of 50%=50% she will be a carrier, so TRUE)
