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Many scientists were reluctant to accept the results of Avery, MacLeod, and McCarty's experiments showing that DNA (rather than protein) was the transforming principle. Why? Consider any experimental weaknesses in their approach as well as any conceptual problems with DNA as a molecule for information transmission.
Rifamycin and actinomycin D are two antibiotics derived from bacterium Streptomyces. Rifamycin binds to b subunit of E. coli RNA polymerase and interferes with formation of the first phosphodiester bond in the RNA chain.
Think about a man who has been exercising. His arterial receptors detect a rise in his blood CO2 and send this information to the brain. He requires to increase both the rate and depth of his breathing.
If A/A x B/B is crossed with a/a and the F1 is testcrossed, what is the genotype and percenage of every progeny if the two genes are unlinked;
Pretend that our class conducted a lab on the population genetics of squirrels in Utah. The class was split into three group and sent to different areas of the state to collect DNA samples.
An oligomeric protein has a molecular weight of 153000. A 960 mg sample was treated with an excess of 1-fluoro-2,4-dinitrobenzene(sanger's reagent) until the reaction was complete.
The son of a man who does not have Huntington's develops Huntington's after age 50. His son develops Huntington's in his late thirties.
If a man with a red-colorblindness (a sex-linked trait) marries a normal woman, would you expect to see trait expressed in their children.
Illustrate the environmental conditions that would favour sexual reproduction over asexual reproduction in Hydra. What is the possible evolutionary reason for having two different reproductive strategies.
Why do you think you only plate a small amount of bacterial solution on the LB-Amp plate?
A 20 year old man injures his right leg in a skiing accident. A Radiograph of leg revels a compund fracture of the right fibula. The leg is immoblized in a cast. Wehn the cast is removed, the pateint notices that acallus has appeared where the cas..
Given a protein as a potential antigen specific to a viral infection, what assay would best identify titers in the patients to indicate exposure and immune response?
Wild type e. coli can synthesize all 20 common amino acids, but some mutants, called amino acid auxotrophs, are unable to synthesize a specific amino acid and require its addition to the culture medium for optimal growth.
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