Using powerful new sequencing technologies, investigators can now catalog every RNA molecule made by a cell and determine at what quantities these RNAs are present. In an experiment, researchers measured the relative quantities of two different mRNAs—one transcribed from gene A, the other from gene B—in two different cell types. Gene B is expressed in both the liver and the brain whereas gene A is expressed in the brain but not in the liver. Which most likely encodes a housekeeping protein?
A. gene B only
B. gene A only
C. both genes
D. neither gene
Ans: A. gene B only
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The technique of ____ is a form of genetic disorder therapy in which a patient's defective protein is artificially provided
a. PGD b. exon splicing c. exon skipping d. intron skipping e. enzyme replacement therapy
Oceanography is the study of:
a. the living organisms that inhabit the sea. b. the oceans and their phenomena. c. the oceans and living organisms. d. the chemical makeup of the oceans. e. the interactions of marine organisms with their environment.
Which of the following is NOT true of auxin?
a. it has an effect on the concentrations of other plant hormones b. it is present only is specialized tissues c. it is made mainly in shoot apical meristems d. it moves through the phloem e. all of these are true of auxin
One disease for which gene therapy has been attempted but has not yet been successful is
A. anthrax. B. tuberculosis. C. the common cold. D. cystic fibrosis.