Most often, genomic library screening uses ____.a. a labeled, complementary single-stranded RNA or DNA molecule called a probeb. colonies of vector bacteria on a Petri dish in order to replicate the desired genomec. recombinant
plasmids containing DNA and DNA ligase
d. cut plasmids containing recognition sites used to carry DNA molecules
e. tRNA polymerase copies with a truncated copy of a DNA template
Answer: a
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When a bacterium reproduces, its offspring inherit a full complement of genetic information, which includes ____
a. one chromosome plus plasmids b. a genetically complete plasmid c. at least two chromosomes d. two chromosomes plus plasmids e. a single strand of circular DNA
Blood types (A, B, and O) are controlled by
a. sex-linked genes. b. linked genes. c. incompletely dominant genes. d. multiple alleles. e. none of these.
The physical appearance of an organism for a given trait is termed:
a. genetics. b. dominance. c. synapsis. d. genotype. e. phenotype.
Which statement best sums up our understanding of how animals navigate during migration?
A. We have a thorough understanding of orientation but not navigation. B. Animal navigation is a complete mystery. C. The mechanisms have been worked out in great detail, from the genes involved, to the brain structures, to the resulting behavior. D. We have some understanding of the information different animals rely on (sun, stars, or magnetic fields), and some sensory structures, but beyond that the mechanisms are still mysterious.