A scientist collects grass clippings to find the source of an outbreak of tularemia is an example of working in the field of
A. epidemiology.
B. food microbiology.
C. biotechnology.
D. agricultural microbiology.
E. genetic engineering.
Answer: A
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Creosote bush clusters have been shown to be descendant from single seeds that germinated
a. in mesic environments. b. 9,000 to 11,000 years ago. c. from asexual reproduction. d. from a drought intolerant genotype. e. after being ingested by herbivores and deposited in feces.
Transgenic animals made by pronuclear injection can be limited for studies of the links between genes and disease because
A) the transgene allele must be dominant to the normal, endogenous allele and some diseases are caused by recessive mutations. B) the transgene allele must be recessive to the normal, endogenous allele and some diseases are caused by dominant mutations. C) all diseases are caused by mutations in multiple genes. D) diseases are not caused by specific alleles of a gene, but by posttranslational modifications of proteins.
Resource partitioning occurs:
a. when the same plants produce different seed types. b. seldomly in sympatric speciation. c. only in lakes. d. when different habitat preferences result in different diets.
What type of DNA map gives locations and sizes of DNA sections?
A. Chromosomal B. Sequence C. Physical D. Linkage E. Geographical