Topics: DNA Quiz
Sickle cell anemia is a disease in which red blood cells become irregularly shaped. The disease is caused by the presence of an incorrect amino acid in a certain protein. The disease most likely occurred due to an altered sequence of nitrogenous bases in the –
A. original DNA in the nucleus.
B. transcribed mRNA strand.
C. tRNA on the ribosome.
D. complementary DNA strands.
Select your answer:
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Muscular System › ViewWhich of the following is not a voluntary muscle?
A. bicep (arm)
B. tricep (arm)
C. hamstring (leg)
D. heart
Hair Evidence › View
Which number in the diagram represents the medulla?
A. C
B. A
C. B
D. D