A polylinker is a:
A. synthetic DNA fragment that contains multiple restriction enzyme sites.
B. synthetic DNA fragment inserted into a vector that allows replication of the vector in the host cell.
C. DNA sequence that allows for selection of cells that contain the vector.
D. molecule used to ligate DNA fragments together.
E. synthetic DNA fragment used in colony hybridization to visualize colonies that contain the DNA of interest.
A
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Athlete's foot is an example of a
A) protozoal infection. B) superficial fungal infection. C) superficial parasitic infection. D) hypersensitivity reaction.
Individuals in the population grouped
according to levels of maturity define the population's a. carrying capacity. b. age structure. c. density. d. size. e. birth rate
When measuring the age of a fossil using Carbon dating, what ratio is considered?
Viruses are considered to be non-living pathogens for which reason?
A) their ability to synthesize only some of their own components B) their extremely small size C) their unique type of cells D) their unique type of cells and their lack of metabolic processes E) their lack of metabolic processes