You are studying the function of a recently identified gene in C. elegans. You perform genetic screens for several months in an attempt to isolate loss-of-function gene mutations, but your efforts are unsuccessful. Your advisor suggests you try another approach to eliminate gene function. The best technique to accomplish this goal would be
A. use RNA interference to prevent mRNA translation.
B. use a histone deacetylase to induce a transcriptionally inactive state.
C. to design a repressor to bind to the operon of this gene.
D. use a C. elegans strain with a homozygous TFIID mutation to prevent the translation initiation complex from forming.
Answer: A
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A. active transport. B. diffusion. C. pinocytosis. D. pumping. E. exocytosis.
The Pax6 gene
A. is a master control gene for eye development. B. codes for a protein that controls the expression of many other genes. C. mutant can cause aniridia in humans. D. is a homolog to the eyeless gene in Drosophila. E. All of the choices are correct.
You’ve just finished a big meal and are relaxing in front of a fire reading your favorite book. The ____ division of
your ____ nervous system is at work.
a. parasympathetic; autonomic b. parasympathetic; somatic c. sympathetic; autonomic d. sympathetic; somatic e. autonomic; somatic
Members of the kingdom Plantae differ from members of the other kingdoms of Eukarya in that most members of the kingdom Plantae ________
A) are decomposers B) are unicellular C) are consumers D) produce their own food