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A) Which RNA polymerase is used in Lac operon expression? Which one is used in eukaryotic gene expression?
B)In Lac operon, what components are needed to initiate transcription?
C)In eukaryotic gene expression, what components are needed to initiate transcription?
If you wanted to make a 0.5M solution of MgSO4, how many grams of MgSO4 would you need? Assume the volume of the solution is one liter. Show your work.
Ascobolus forms linear octads. In a cross between a WT pur+ strain (+) and a mutant pur- strain (m), the pur region sometimes forms heteroduplex DNA.
The gene has 32 exons. Removal of exons 3-5 should alter the reading frame and produce a protein with an early stop codon. How might removal of three exons lead to a stop codon that occurs in exon 6 instead of in exon 32?
Iodoacetate reacts with cysteine side chains in proteins to form S-carboxymethyl derivatives. Why is it a good idea to treat a protein first with beta-mercaptoethanol before carrying out carboxymethylations of cysteine residues? Why might treatmen..
Discuss the purpose of the immune system is to recognize foreign bodies and respond with the production of immune cells and proteins.
A small, impermeable membrane is placed between the anchor cell and the other vulva precursor cells in a larva of C. elegans. What would you expect the result to be.
Hill buffer is a solution of 0.4 M K2HPO4 made up in 0.08M KCl. We needed 2500 mL for the week. Show your work. a.) How many grams of KCl (FW = 74.551) were needed to make this volume of buffer? b.) How many grams of K2HPO4 (FW = 174.17) were need..
Which term describes tonicity of the external solution. Were latitude the only control of temperature, the isotherms would run straight across the map from east to west. Describe one region of the world where this hypothetical isotherm pattern is rea..
How many genes are involved in the growth behavior phenotype, and was must the genotypes in the cross be? Assume recessive loss- of function mutations are involved.
Which of the following CANNOT undergo microevolution?
When the children of various such two-child families are totaled, what proportion of children in these families will show the phenotype.
A male baby who appeared normal at birth began to develop lethargy, hypothermia and apnea at forty-two hours after delivery. The infant was found to have normal levels of blood glucose,
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