The calcitonin gene can encode either the hormone calcitonin or a protein called

Question

The calcitonin gene can encode either the hormone calcitonin or a protein called calcitonin-gene-related peptide depending on which 3 cleavage site is used. In the thyroid gland, cleavage and polyadenylation occur after the fourth exon leading to calcitonin production. However in the brain, the exact same transcript is cleaved and polyadenylated after the sixth exon yielding calcitonin-gene-related peptide. This is an example of:

a) multiple capping. b) alternative RNA processing. c) polyadenylation. d) environmental influence. e) mutation

Explanation / Answer

Ans 1: (b) alternative RNA processing.

Ans 2: (E) None of the above statements are true about tRNA molecules.

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