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1. In E. coli the following Hfr strains donate the markers shown below in the orders given:Hfr strain Order of gene transfer1 G E B D N A2 P Y L G E B3 X T J F P Y4 B E G L Y PAll the Hfr strains were obtained from the same F+ strain. What is the gene order on the original bacterial chromosome?2. An Hfr strain (arg+, bio+, leu+) is mated to an F- strain (arg-, bio-, leu-). Assume that this Hfr strain transfers arg+ last. You grow the exconjugants on arg- media, supplemented with leu+ and bio+. You recover 423 arg+ exconjugants. These are tested individually for bio and leu and you find the following distribution of genotypes:arg+, bio+, leu+ 360arg+, bio+, leu- 9arg+, bio-, leu+ 0arg+, bio-, leu- 54Determine the gene order and the recombination distances between the three genes.
Examine the major stages of sea urchin development with reference to your series of detailed drawings and observational notes. How did the embryonic cells compare in size with the original gamete cells? State reasons such a difference may exist.
Phosphonylation, a chemical surface treatment, has been proposed as a means of increasing the hydrophilicity of LDPE, and therefore increase its lubricity and reduce vascular tissue damage.
Which of the following is NOT the way proteins are transported through the Golgi? Clathrin-coated vesicles bud from the ER and fuse with the Golgi.
calculate the percent recovery for the analysis of a spike. the sample was spiked with 5.00 ml of a 200.0 mg/l solution. the sample matrix concentration was determined to be 30.0 mg/L. The sample matrix volume (excluding the spike) was 90.00 ml. T..
assume there are two animals identical to each other in all respects except that one is an endotherm whose body
Considering the circumstances and the preliminary work-up, what type of anemia is most likely for Ann?
q1. thirteen-year-old ryan has begun to challenge many of his parents values and to express his own set of highly
eukaryotic cells in plants animals fungi and algae are bigger than prokaryotic bacterial cells. this bigger size allows
fatty acids must associate with lipid chaperones in order to move within the cell. why are these chaperones neededand
A doctor will give you an antibiotic to treat the bacterial infection, but you are given a vaccine to keep a virus (and some bacteria) from making you ill. What is the dissimilarity between these approaches.
carbon dioxide is important in our atomosphere because it is required for photosynthesis and traps some heat keeping
Discuss embryonic stem cell invitro methord in which transgenic animal were generated and efficient show how homologous recombination happening?
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