Multiple Choice
In the United States about ________ African Americans have sickle cell disease and about ________ have sickle cell trait.
A) 1 in 10,000; 1 in 100
B) 1 in 5,000; 1 in 20
C) 1 in 20; 1 in 5,000
D) 1 in 12; 1 in 500
E) 1 in 500; 1 in 12
Correct Answer:

Verified
Correct Answer:
Verified
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