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You have an F- strain of E. coli that is resistant to strepto- mycin (Str(r)) but requires the following amino acids for growth on minimal medium: arginine, cysteine, methionine, phenylala- nine, and proline. You do a series of interrupted mating exper- iments with two different Hfr strains, Hfr1 and Hfr2, both of which are wildtype for all amino acid markers, but are Lac(-) and Str(s) (sensitive to streptomycin).The following data are the times in minutes at which you first observed recombinant progeny containing the indicated amino- acid marker (prototrophy).Results of F- x Hfr1 cross Arg+ = 5Cys+ = 65Met+ = 75Phe+ = 35Pro+ = 10Results of F- x Hfr2 cross Arg+ = 40Cys+ = 70Met+ = 60Phe+ = 10Pro+ = 35Give the order of genes on the Hfr1 chromosome in the order transferred (e.g. CysPheMetArgPro)Give the order of genes on the Hfr2 chromosome in the order transferred (e.g. CysPheMetArgPro)You do a new mating experiment with the same strains. You interrupt the mating after 60 minutes and plate on a medium that selects for progeny that are re- combinant for the phenylalanine gene (Phe+). What sup- plements/antibiotics must be added to the minimal medium
2-experimental varieties of strawberry are produced by crossing a hexaploid line that contains 48 chromosomes and a tetraploid line that contains thirty-two chromosomes.
When such a drug is added, what will occur to ATP synthesis and oxygen consumption, if rates of glycolysis and the citric acid cycle stay the similar.
In a Mendel assignemnt, I was given F2 generation of ear corns yellow plump, yellow shrunken, purple plum, and purple-shrunken with a phenotype ratio of 9:3:3:1.
Explain the phenomenon of drug resistance from the standpoint of microbial genetics inlcude a description of R plasmids/factors.
Describe negative effects of caffeine on organ system of huma body please iclude the mla citation for this research paper?
An allele A undergoes mutation to the allele a at the rate of ten to five per generation. If a very large population is fixed for A, what is the expected frequency of A in the following generation?
If some cell-surface receptors, including cytokine receptors and notch, can rapidly signal to the nucleus by activating latent transcription regulators at the plasma membrane, why do most cell-surface receptors use long, indirect signalling cascades ..
Assume you are a population geneticist, studying a particular disease which is inherited as an autosomal recessive trait. In the population you are studying, the incidence of the disease is three percent.
Determine which of the following methods can be used to identify the mesodermal cells that give rise to the vertebrate limb?
What do you predict would be the main product. How many can the predictions above be used to determine the mechanism by which the fatty acids are released from the fatty acid synthetase.
In horse, black coat colour is influenced by the dominant allele (B) and chestnut coat colour by the recessive colour (b). Trotting gait is due to dominant gene (T), pacing gait to the recessive allele (t). What colour horse would you use to find out..
Question: The genomes of (+) RNA viruses can be translated immediately upon cellular entry, even though they do not possess a 5' 7-methylguanosine cap due to the presence of this structure at the 5' end of the genome [x]
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