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Question: In the four cell stage C. elegans embryo the P1 blastomere induces endoderm formation in the posterior daughter of the EMS blastomere. The P1 and EMS blastomeres can be extracted from the embryo and cultured alone or in combination. They will divide and you can use an antibody to determine if any endodermal cells are formed. You have identified a mutant called mom-2 (more of mesoderm, meaning less of endoderm) in which no endoderm forms. How would you determine if the mom-2 gene product acts in the P1 or EMS cell?
It is commonly reported that up to 50 percent of a cell's energy budget is spent on protein synthesis. Think about the properties of two hypothetical genetic codes constructed with the four common nucleotides.
Why water is known as polar solvent? How is hydrogen bonding involved in cohesive attraction of water molecules? Water molecules also attract other sorts of molecules, particulary ions.Why is this.
Explain the epidemiological attributes of this episode. In which special circumstances can cross-sectional surveys be utilized to test the hypotheses? In your answer explain briefly the characteristics of the cross-sectional study.
Would the blood pressure in pulmonary capillaries at the bottom of a lung be the same as blood pressure in the capillaries at the top of a lung in the standing individual?
Determine how much in mL of .5 M NaOH total can you add to the solution in question 4 and still have a good buffer also Extimate the pH of a 0.05 M solution of TRIS acid (pKa=8.3)?
In agrobacterium transformation, after infecting leaf discs with agrobacterium, they are incubated on the co-cultivation plates and transferred to the callus-inducting media.
Because you want to see if you can determine a more accurate analysis of the frequency of the disease allele in your population, your sample 2,000 individuals
Explain why is RNAse added to PCR? Prevent RNA from annealing to the template strand. But what else is it used for
Each of the following statements Explain a type of column chromatography . Sort the statements to the type of chromatography they describe. If statement can explain all of the types, place that statement in the category.
Describe the difference between the ionic and covalent bonds. Describe the functions of the three specialized tissues in plants.
Compute the surface area of volume ratio of a cube whose sides are 100 um in length to approximate surface area to volume ratio of the fern spore cell.
Explain why do diuretics produce less diuresis than the loop diuretics and why would thiazide diuretic be chosen over the others for the treatment of hypertension?
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