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Sickle cell anemia is a genetic blood disorder where red
Chapter , Problem 3.34(choose chapter or problem)
Sickle cell anemia is a genetic blood disorder where red blood cells lose their flexibility and assume an abnormal, rigid, “sickle” shape, which results in a risk of various complications. If both parents are carriers of the disease, then a child has a 25% chance of having the disease, 50% chance of being a carrier, and 25% chance of neither having the disease nor being a carrier. If two parents who are carriers of the disease have 3 children, what is the probability that
(a) two will have the disease?
(b) none will have the disease?
(c) at least one will neither have the disease nor be a carrier?
(d) the first child with the disease will the be 3rd child?
Questions & Answers
QUESTION:
Sickle cell anemia is a genetic blood disorder where red blood cells lose their flexibility and assume an abnormal, rigid, “sickle” shape, which results in a risk of various complications. If both parents are carriers of the disease, then a child has a 25% chance of having the disease, 50% chance of being a carrier, and 25% chance of neither having the disease nor being a carrier. If two parents who are carriers of the disease have 3 children, what is the probability that
(a) two will have the disease?
(b) none will have the disease?
(c) at least one will neither have the disease nor be a carrier?
(d) the first child with the disease will the be 3rd child?
ANSWER:Step 1 of 5
P(having sickle cell anemia)=P(D)=0.25
P(being a carrier)=P(C)=0.5
P(not having disease nor carrier)=P(N)=0.25