Two sisters went to the hospital. The medics ran some blood tests and found out that Sue had sickle cell trait, while Mary had normal blood cells. Sue received treatment. Which sister doesn't have a genetic abnormality?
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Answer: Mary

Two teams of researchers studied different diseases. team Alpha studied people with cholesterol, while team Beta studied people with Parkinson's disease. Which team studied more people with restricted blood flow to the heart muscle?
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Answer: Alpha

John is learning more about different cultures and people around the world. He noticed that people have different skin colors. To learn more about the science behind skin colors he categorized the skin colors into two broad groups, case D and case L. Case D is represented by darker skin and case L is represented by lighter skin. In which case melanocytes would produce less melanin, case D or case L?
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Answer:
case L