A new arrow labeled "lengthens" could be added between __________.
a. "target DNA" ? "DNA strands"
b. "primers" ? "DNA strands"
c. "Taq polymerase" ? "primers"
d. "target DNA" ? "primers"
Ans: c. "Taq polymerase" ? "primers"
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How might mutations in the dnaQ sequence, whose enzyme is involved in DNA proofreading, be beneficial for a microbe in a highly competitive and dynamic community?
What will be an ideal response?
What mechanism used for mobilization of transposable elements can lead to deletions in genomes?
A) Transposase sometimes deletes genomic DNA while removing DNA transposons from the genome. B) Alignment of two transposable elements is required for mobilization and misalignment can result in deletions. C) RNA polymerase transcribes transposable elements; when it makes mistakes, DNA nucleotides are sometimes deleted. D) Piwi RNAs inhibit movement of transposons by deleting DNA that includes and surrounds the inverted repeats.
_______ is the ability of a pathogen to overcome the body defenses.
A. virucidence B. virulence C. transmissibility D. infectiousness
Please choose from the lists below the proper order of three words that best characterize the three mechanisms of succession proposed by Connell and Slatyer: facilitation, inhibition, and tolerance. The words should relate properly to the effect of one species on the probability of a second species becoming established during succession.
A) neutral, positive, negative B) positive, neutral, negative C) positive, negative, neutral D) negative, positive, neutral