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yusuki yusuki
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9 years ago
What is the cause of sickle-cell anemia?
a.   a defective gene inherited from both parents
b.   a genetic defect affecting synthesis of hemoglobin chains
c.   bone marrow depression
d.   an autoimmune reaction

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monosaccharidemonosaccharide
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9 years ago
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yusuki Author
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9 years ago
What I needed, thanks.
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9 years ago
Don't forget to vote as best answer!
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