Final answer:
Female offspring of a carrier mother have a 0% chance of being affected by an X-linked recessive disorder but a 50% chance of being a carrier. Male offspring have a 50% chance of being affected.
Step-by-step explanation:
The question concerns the probability that female offspring will inherit an X-linked recessive disorder from her parents. Based on the provided information, which describes the inheritance pattern of X-linked recessive disorders, a woman who is a carrier of such a disorder has a 50 percent chance of passing the carrier status to her daughters. Therefore, since the question specifically asks about a female child inheriting the disorder, and not solely the carrier status, the correct answer is that female P has a 0% chance of being affected by the disorder, but a 50% chance of being a carrier.
It is important to note that male offspring have a 50% chance of being affected because they will receive only one X chromosome from their mother. If that X chromosome carries the recessive disorder, they will express the disorder since males do not have a second X chromosome to potentially offset the recessive gene. In contrast, females have two X chromosomes, and the healthy one typically overrides the recessive disorder, meaning they would only be carriers if inheriting a single recessive gene.