Describe the phenotypes of the following E. coli mutants when grown in two different media: glucose only and lactose only. Explain why. (6 points) a. A strain with a mutation in the gene encoding the lacI gene; the mutant LacI protein cannot bind allolactose. b. A strain with a mutation in the gene encoding CRP; the mutant form of CRP binds but cannot release cAMP. c. A strain in which the Shine-Dalgarno sequence has been deleted from the gene encoding adenyl cyclase.
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According to the theory of punctuated equilibrium, at what rate does speciation occur? species change depending on the rate of natural selection. after periods of stasis, new species evolve relatively rapidly. species change slowly and eventually form new species. some species change quickly and others change slowly to balance the overall rate.
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Which set of characteristics best describes sedimentary rock? a) largest type of rock, made of organic matter, hardest type of rock b) often contains layers, forms near sources of water, contains fossils c) least abundant type of rock, made of other rocks, made mostly of minerals d) most abundant type in earth's crust, made of magma/lava, contains no fossils
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Biology, 22.06.2019 04:40
Iwill mark brainliest and all that sha-bang. what is the function of the endocrine system? a. control longer term response in the body. b. transmit messages throughout the body. c. remove waste from the body. d. all of the above
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Describe the phenotypes of the following E. coli mutants when grown in two different media: glucose...
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