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Integumentary system › View

Number 3 on diagram

A. Dermis

B. Hypodermis

C. Epidermis

D. Hyperdermis

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DNA › View

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.

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