explaining reasons for congressional inaction on the regulation of gene transplant experiments
describing a problematic agricultural practice and its serious genetic consequences
verifying the therapeutic ineffectiveness of anti-infective drugs
evaluating recently proposed restrictions intended to promote the growth of meat animals
18. According to the passage, the exchange of plasmids between different bacteria can results in which of the following?
Microorganisms resistant to drugs
Therapeutically useful circlets of genes
Anti-infective drugs like penicillin
Viruses for use by molecular biologists
Vehicles for performing gene transplant experiments
19. It can be inferred from the passage that the author believes that those in favor of stiffening the restrictions on gene transplant research should logically also
encourage experiments with any plasmids except those bearing genes for antibiotic resistance
question the addition of anti-infective drugs to livestock feeds
resist the use of penicillin and tetracyclines to kill microorganisms
agree to the development of meatier livestock through the use of antibiotics
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