Alternative RNA splicing is a method that apparently evolved for the production of many different polypeptides from the same pre-mRNA. Provide an example of alternative splicing
What will be an ideal response?
Various splicing schemes occur in the CT/CGRP gene in different tissues. In thyroid tissue, only the first four exons remain, whereas in the brain, exons 5 and 6 are included, but not exon 4.
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True or false: Marine fish have impermeable renal tubules, allowing them to reabsorb scarce elecrolytes without also reabsorbing water they are trying to eliminate
A. true B. false
The French taxonomist who, in 1809, proposed the first testable evolutionary theory that organisms using body parts repeatedly would increase their abilities was
A. Jean Baptiste Lamarck. B. Georges-Louis Buffon. C. Charles Darwin. D. James Hutton. E. Charles Lyell.
True or False: Once someone has been diagnosed with stage 4 cancer, there are no further treatment options that may help.
Answer the following statement true (T) or false (F)
Sickle-cell anemia is caused by ____
a. an RNA error b. expansion mutation c. deletion mutation d. fragile X syndrome e. a base-pair substitution mutation