Which of the following statements is incorrect concerning the use of drug therapy in an HIV-positive patient?
A) Reverse transcriptase inhibitors can help to slow the virus from entering into host chromosomes.
B) Protease inhibitors can slow the assembly of new viruses.
C) If drug therapy is used in a confirmed HIV-positive patient, all HIV viruses can be successfully eliminated from the body.
D) Two or more drugs can be combined to form a "drug cocktail."
Answer: C
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While doing a pedigree analysis of a royal family from a Pacific Island nation, you notice two parents with the same genetic disease who have four children
All four of the girls have the disease, but when they marry unaffected individuals none of the 16 grandchildren has the disease. If this disease is controlled by a single gene, then the most likely explanation would be: A. the disease is a spontaneous mutation. B. the disease is recessive and is only seen in homozygous recessive individuals such as the affected girls. C. the disease is dominant and is only seen in homozygous dominant individuals. D. the disease is dominant and is seen in heterozygous or homozygous dominant individuals.
Bryophytes differ from other land plants in that they do not have
a. lignified water transport tissue. b. protected sporophyte embryos. c. spores. d. a gametophyte generation. e. a diploid generation.
In garden peas, smooth seeds are dominant to wrinkled ones, and yellow pea color is dominant to green. In a dihybrid cross of SsYy x SsYy, what proportion of the offspring from this cross is expected to be both smooth and yellow?
1.9/16
2.3/16
3.1/16
4.none
A thin slice of lung tissue looks like a cross-section of
A) a carrot. B) a sponge. C) a blown-up balloon. D) a piece of wood. E) a ball of worms.