Which of the following is NOT one of the four major
intervals in the geologic time scale?
a. Mesozoic
b. Proterozoic
c. Carboniferous
d. Cenozoic
e. Paleozoic
Answer: c
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What unit is isotopic fractionation reported as?
A) parts per billion B) parts per million C) parts per thousand D) parts per trillion
DNA profiling relies on an individual's ________, no two of which are the same between different people, except identical twins.
A. unique set of short tandem repeats within DNA B. unique set of genes C. unique mRNA sequences D. unique fingerprints
The relationship between strands of RNA and DNA is
a. antagonistic. b. opposite. c. complementary. d. an exact duplicate. e. unrelated.
Evidence for the evolution of antibiotic resistance in bacteria has been evaluated ________
A) in populations of bacteria within individual patients B) in studies comparing newly diagnosed patients v. patients who have relapsed after antibiotic treatment C) in studies comparing the fraction of patients with resistant bacteria and society-wide use of antibiotics D) in all of the above examples E) in no empirical studies; there is no evidence that antibiotics act as a selective agent