Most defects in beta thalassemia are a result of what genetic defect?
a. Loss of gene expression because of promoter region methylation
b. Point mutations in regions of the DNA controlling gene expression
c. Deletion of the structural globin gene
d. Omission of the alpha globin chain
Correct Answer: B
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Water flow reduction may be caused by encrustation, which is caused by:
A. foreign matter. B. biological growth. C. leaking or broken pipes. D. size and shape of the pipe.
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The fraction 4/5 is considered a(n)
A) proper fraction B) improper fraction C) complex fraction D) mixed fraction
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