Briefly describe what is meant by the term autoradiography and identify a classic experiment that used autoradiography to determine the replicative nature of DNA in eukaryotes
What will be an ideal response?
Autoradiography is a technique that allows an isotope to be detected within a cell; the Taylor, Woods, and Hughes (1957 ) experiment used 3H-thymidine.
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Thirty organisms containing the same phylogenetic marker are all considered to be within the same
A) phylotype. B) species. C) functional group. D) phylogenetic tree.
Which of the following would most quickly be eliminated by natural selection?
A) a harmful allele in an asexual, haploid population B) a harmful recessive allele in a sexual, diploid population C) a harmful recessive allele in a sexual, polyploid population D) any harmful allele, regardless of the system of inheritance in a population
Which organisms would MOST likely be isolated from aerobic growth conditions with acetate and a soil sample heated to 80 °C for 10 min?
A) aerobic or facultative anaerobic acetogens B) endospore-forming bacteria C) hyperthermophilic heterotrophic bacteria D) mycoplasmas
Semicircular canals are associated with the:
A. lateral line system. B. tympanic membrane in insects. C. vestibular system. D. cochlea.