
Lauren S. answered 06/10/21
Patient and Experienced Science and Writing Tutor
Female offspring have a:
-50% probability of being brown-eyed with normal clotting
-50% chance of being blue-eyed with normal clotting
Male offspring have a:
-25% chance of being brown-eyed with normal clotting
-25% chance of being blue-eyed with normal clotting
-25% chance of being brown-eyed with hemophilia
-25% chance of being blue-eyed with hemophilia
Since the dad does not have hemophilia, and it is an x linked trait, this means that his x will be X^H. Therefore, he will give his daughters a non mutated x chromosome. In addition, the mom is only a recessive carrier, which means that even if she gives her daughters her mutated x chromosome, they will only be carriers for hemophilia, since they have a healthy x chromosome from dad.
For the sons however, they only receive one x chromosome, and that x chromosome always comes from mom. If they get her mutated chromosome, they will have hemophilia.
In terms of figuring out the eye color, I drew a simple punnet's square and determined that there is a 50% chance of either eye color. When determining the probability of two events occuring simultaneously, you multiply the probabilities by each other. Therefore, since males have a 50% chance of being brown-eyed, and a 50% chance of being blue-eyed in addition to a 50% chance of having hemophilia and a 50% chance of having normal blood clotting, you simply multiply 1/2 by 1/2 to get their probabilities of 25%.
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