The gene for human insulin has been successfully cloned in
A. S. aureus.
B. E. coli.
C. rhinovirus.
C
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Vibrio cholerae lives in water and gets toxin genes from a virus by phage conversion. The toxin kills the intestinal epithelial cells in the human host, resulting in massive diarrhea. Untreated cholera has about a 50% mortality rate. How do the bacteria benefit?
A. They don't -- humans are not the main host and their symptoms are maladaptive for the bacteria. B. The bacteria reproduce faster in a dead human. C. Diarrhea helps the bacteria to spread from person to person. D. Killing humans provides nutrients for the bacteria.
Red foxes eat a wide variety of plants and animals, so we would say they are ________
A) carnivores B) parasites C) omnivores D) producers
Recombination rates across a chromosome:
a. are highly variable. b. are large in recombination hotspots. c. are nearly equal. d. A and B. e. None of the above.
Which of the following statements about genome-wide association studies (GWAS) is false?
(a) GWAS use SNPs to compare populations of people with disease and people without disease to look for SNPs more likely to be present in those with disease. (b) GWAS can be used even if more than one gene can cause the disease of interest. (c) Sometimes GWAS will identify SNPs that are associated with a disease but these SNPs do not affect the gene product of the gene that causes the disease. (d) Studies using GWAS only examine SNPs that occur very rarely (<0.001%) in the population, as those SNPs are most likely to cause disease.