Sister chromatids are separated from each other during
a. metaphase I.
b. anaphase I.
c. telophase II.
d. anaphase II.
e. metaphase II.
D
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Reverse transcriptase, the enzyme responsible for copying viral RNA into cDNA prior to integration into the host genome, lacks 3'-to-5' exonuclease "proofreading" ability. How is this advantageous to organisms that depend on such enzymes?
What will be an ideal response?
Identify three ways in which the evolution of photosynthetic autotrophs affected either the atmosphere
or other organisms. What will be an ideal response?
Select the best response to the question. ?Which of the following is an important advantage of the broth dilution method over the disk diffusion method of susceptibility testing?
A) The results are identified more rapidly. B) It can identify the drug concentration or dosage needed to inhibit organism growth. C) It can identify a "zone of inhibition" that is compared to established standards to determine sensitivity. D) The testing is less expensive and less labor intensive.
Put the steps of creating a DNA fingerprint in the correct chronological order.
A) Amplify each STR region, sort the fragments by size, and determine the size of the fragments. B) Sort the fragments by size, use PCR to amplify the fragments, and determine the genotype of each fragment. C) Determine the genotype of each STR allele, amplify the STR region, and sort the alleles by size. D) Use PCR to amplify each STR region, determine the size of each fragment, and sort the fragments by size. E) Determine the genotype of each STR allele, sort each allele by size, and amplify the STR region.