Over the years, sophisticated plasmid vectors have been developed for use in recombinant DNA technology. List at least two features that have been introduced in particularly useful vectors

What will be an ideal response?


small size to allow large inserts, high copy number, large numbers of unique restriction sites (multiple cloning sites), variety of selection schemes (pigmented colonies, antibiotic resistance)

Biology & Microbiology

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_____ is life’s primary source of energy.

a. Food b. Water c. Sunlight d. ATP

Biology & Microbiology

In this disease, bacterial enzymes digest the

alveolar wall and the lungs become distended and inelastic. This disease is

a. anemia. b. emphysema. c. asthma. d. bronchitis. e. atherosclerosis

Biology & Microbiology

The theory of independent assortment

a. is not demonstrated in a monohybrid cross. b. is illustrated by the behavior of linked genes. c. indicates that the expression of one gene is independent of the action of another gene. d. states that alleles for the same characteristic separate during meiosis. e. is negated by the phenomenon of epistasis.

Biology & Microbiology

Linnaean classification sometimes does not reconcile with cladistics because

A. some organisms in the same clade do not have a shared derived trait. B. some organisms in the same taxon are not in the same clade. C. all organisms with a shared derived trait are in the same taxon. D. larger clades include more than one taxon. E. Linnaean classification does not follow the principle of parsimony.

Biology & Microbiology