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Suppose you infect E. coli cells with two strains of T4 virus. One strain is minute (m), rapid lysis (r) and turbid (t); the other is wild-type for all three markers. The lytic products of this dual infection are plated on a lawn of E. coli and the morphology of the plaques are classified. The resulting 10, 342 plaques were distributed among eight phenotypes, as follows:
m r t 3467+ + + 3729m r + 853m + t 162m + + 520+ r t 474+ r + 172+ + t 965
You decide to repeat the exact same experiment as outlined above and this time you count and classify 25, 000 plaques? How many plaques would you expect to be wild-type for all three markers? (Hint: You will need to calculate the coefficient of coincidence for the cross above and apply that to your answer.)
On physical assessment, nurse determines that his ankles and feet are very swollen. Which of these symptoms reflect left-sided heart failure and which reflect right-sided heart failure, and why give appropriate reason.
Studies have demonstrate that the effect of neuropeptide Y on smooth muscle cells in the uterus is attenuated doing pregancy.
You ran your samples thorugh a 1% agarose gel. would you expect to get the same results if you ran your samples through 5% agarose gel? Explain your answer.
A chemical reaction in which polymers are synthesized from their building blocks is called.
Read over the description of the Human Inherited Traits in the Week 6 Experiment instructions in our course and complete the table given below.
suppose a bird that eats grasshoppers moves into the prairie. How will this affect natural selection of the grasshoppers? How might this change in a drought year.
Acetylcholine binds this membrane protein, which subsequently opens to allow sodium to enter the cell. Acetylcholine exerts its effect on what kind of transport protein.
Defects in structures of cell can lead to various diseases. Pick one structure of eukaryotic cell and develop a hypothesis as to what you think implications would be if that structure did not function properly and determine where is genetic material ..
Propose a hypothesis to explain the current decline in Songbird numbers. Suggest an experiment that could test your hypothesis.
Another dog, Billy, has three restriction sites for this enzyme in his genome. For this problem suppose there is only one chromosome in dogs.
A mutant prostist is found in which some mitochondria lack an inner mitochondrial membrane. Which pathways would be completely disrupted in these mitochondria.
Verify the listed specific committed effective dose-equivalent, HE per unit intake, is 8.63 E-9 Sv/Bq. Find the most limiting ALI.
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