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Assume you have isolated three nonsense mutations in a T4 Phage, each of which is unable to reproduce in Wild Type E.coli. You do not know whether these mutations are in the same gene or not. You infect a wild type (nonpermissive)ecoli with to of these phages at a high MOI (culture A). You observe plaque formation collect the lysate and use half of it to infect a nonsense suppressor strain (permissive) at low MOI (culture B) and the second half to infect wild Type Ecoli (nonpermissive) at low MOI (Culture C). Avg. plaque counts for each of these cultures is given for different combination of phage mutants below.
In a population with two alleles, A and a, frequency of A is 0.2. Organisms that is homozygous for A die before reaching sexual maturity. In five generations, what will be the frequency of individuals aa with genotypes.
Explain how multiple signals may travel from the dendrites of a single neuron to the axon terminal of that same neuron.
Gel filtration column was calibrated with blue dextran, its elution volume found to be 17.4 mL. Then, unknown protein and BSA were ran through the same column and eluted in 43 mL and thirty-six mL correspondingly.
Create the process of initiation of translation, keeping in mind the molecules needed for translation. What regulates the proper positioning of the ribosome during initiation of translation?
Explain why does inhibiting the Na/K transport pump in neurons will not have an instant effect on membrane potential. Over time the membrane potential will depolarize.
An individual heterozygous for 4-gene pairs AaBbCcDd was testcrossed to aabbccdd , and progeny were classified as follows,
Suppose you are injecting a subthreshold depolarizing current step into a neuron. Draw the corresponding membrane voltage response;
In bio lab we studied corn on the cob and the four different traits which were purple, smooth , yellow , wrinkled corn. question is the traits i investigated in this excercise inherited though single gene, few genes, many genes?
Describe the molecular events that generate the "dark current" in photoreceptor cells;define the impact of this cycle on the typical resting.
Prepare an essay on nosocomial infection.
Which declaration is NOT true about DNA replication. Replication can only begin at distinct regions known as origins of replication.
Which is likely explains the genetic uniqueness of this population. Following accident and reconstructive surgery, he noted that his left lower eyelid was still drooping and the corner of his mouth sagged. What nerve damage did he maintain.
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