Genetic drift is non-selective and therefore does not contribute to microevolution
a. True
b. False
ANSWER: False
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Refer to the paragraph about the formation of the Isthmus of Panama. The sister populations on opposite sides of the isthmus are true species under which species concept?
A) the morphological species concept B) the biological species concept C) the phylogenetic species concept D) both the morphological species and phylogenetic species concepts E) the morpholoogical species, biological species, and phylogenetic species concepts
The thin, sheetlike basal laminae are found
a. under epithelia. b. in the cytoplasm just below the plasma membrane. c. in the extracellular space surrounding all eukaryotic cells. d. in between adjacent cells connected by gap junctions.
What trait is exhibited only in Homo sapiens and not in other primates in existence today?
A. symbolic language B. opposable thumb C. tool use D. bipedalism
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."