Beta thalassemia is most often caused by

A. amino acid substitutions.
B. extended chains in beta globin.
C. lowered or absent synthesis of beta globin.
D. excessive synthesis of beta globin.
E. altered rates of oxygen transport.


C

Biology & Microbiology

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The most common planktonic stage of the majority of marine gastropod species is the:

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The vaccine to prevent cervical cancer is a(n) (attenuated/recombinant/toxoid) vaccine

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