A researcher has used in vitro mutagenesis to mutate a cloned gene and then has reinserted the mutated gene into a cell. To have the mutated sequence disable the function of the gene, what must then occur?
A) recombination resulting in replacement of the wild type with the mutated gene
B) use of a microarray to verify continued expression of the original gene
C) replication of the cloned gene using a bacterial plasmid
D) transcription of the cloned gene using a BAC
A
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The incubation period of rabies is partially determined by
A. age of the patient. B. season of the year that the disease is acquired. C. length of journey from the bite site to the brain. D. the amount of virus introduced into the wound. E. length of journey from the bite site to the brain AND the amount of virus introduced into the wound.
Declining auxin levels in leaves and fruits trigger these structures to produce ________, which mediates abscission
a. abscisic acid b. gibberellins c. ethylene d. cytokinins
Which of the following statements about the adrenal medulla is false? a. The fight-flight response involves the adrenal medulla
b. The adrenal medulla releases norepinephrine. c. The adrenal medulla releases epinephrine. d. The adrenal medulla contains specialized neurons of the parasympathetic division.
Stem cells show promise for mending damage
due to a. spinal cord injuries. b. Parkinson's disease. c. muscular dystrophy. d. heart attacks. e. all of these.