One of the objects of desensitization procedures is to
A. Control transplantation rejection
B. Increase the level of IgE in the vascular system
C. Stimulate the production of interferon
D. Destroy immune complexes that may have formed in the blood vessels
E. Reduce the number of basophils and mast cells to which IgE attaches
Answer: E. Reduce the number of basophils and mast cells to which IgE attaches
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True or False: Although most behaviors are influenced by multiple genes, in Drosophila foraging behavior is influenced by a single gene with two different alleles (for S and for R)
A. true B. false
Symptoms of phenylketonuria (PKU) may be minimized or suppressed by a diet low in
a. serine. b. glycine. c. phenylalanine. d. proline. e. glutamic acid.
The tail on a sperm cell is the only example of a flagellum in the human body.
a. true b. false
Suppose two genes a and b are 7.4 map units from each other, and that genes b and c are 5.7 map units from each other. You do a cross to determine the map distance between a and c. Which result would indicate that c lies between a and b?
a. 2.0 map units b. 11.1 map units c. 14.8 map units d. 15.0 map units