Biology, 20.09.2019 12:30, holman6884
Assume that you transform bacteria with a plasmid containing an ampicillin-resistance gene. instead of directly plating the transformed population as you did in this lab, you set up two liquid cultures of them, one that contains ampicillin and one that does not. you will then assay these cultures on plates at two different times: immediately after you set up the cultures, and then again after the bacteria have been in culture for an extended period. the assays will demonstrate the number of ampicillin-resistant vs. ampicillin-sensitive culture bacteria in each culture at each time. to perform each of the two assays, you prepare serial dilutions of the two cultures and plate them onto lb plates with and without ampicillin (the dilution) is simply to ensure that you will get some plates on which you can distinguish separate colonies).
describe what you expect to observe in the initial assay and in the second assay. what, if any, differences might you expect in terms of the ratios of ampicillin-resistant and nonresistant bacteria?
Answers: 1
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Jasmine, at 33 months of age, is able to engage in some self-care behaviors but still has trouble with tasks such as putting on socks. a few months later, she accomplishes this same task relatively easily. the change in abilities is most likely due to
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Biology, 22.06.2019 03:30, tez87
Cold case files recently began re-investigating an old murder case. the murder took place in the park; a young man, james, was hit over the head with a brick and killed. police suspected the jealous former boyfriend of james' wife, karen. whoever killed james may have washed their hands in a near-by bird bath as detectives found blood in the bird bath. since the murder took place before dna fingerprinting was available, the suspected killer, ronnie, went free. detectives are now reviewing the blood evidence using dna fingerprinting. based on the dna fingerprints of all possible suspects, who is james' killer?
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Biology, 22.06.2019 07:00, johndiaz26
Give an example of a trait that is controlled by more than one gene.
Answers: 1
Assume that you transform bacteria with a plasmid containing an ampicillin-resistance gene. instead...
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