Most genetically modified crops carry genes for ____
a. herbicide resistance
b. disease and pest resistance
c. nutritional enhancement
d. making human medicines
e. increased yields
ANSWER: b
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Which of the following is an advantage of cDNA libraries?
A. cDNA libraries are easy to make. B. cDNA libraries utilize genomic DNA, which is easy to obtain. C. cDNA lacks introns and therefore reflects all the genes expressed by a particular tissue or organism. D. cDNA lacks exons. E. cDNA libraries are more stable than other DNA libraries.
DNA polymerase can only add new nucleotides to the 3' DNA end of the template.
Answer the following statement true (T) or false (F)
Blood from the body is first received by the heart in
the a. coronary vein. b. left atrium. c. right ventricle. d. right atrium. e. left ventricle.
All coliforms are
A. enteric pathogens. B. rapid lactose fermenters. C. oxidase positive. D. fastidious. E. strains of E. coli.