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You have a constitutive mutant, but you are not sure if it is constitutive due to a repressor mutation or an operator mutation. What would be a good experiment to determine whether the phenotype is due to a defective repressor or to a defective operator. In the hypothesis, be specific as to what results you would expect.
If you had to determine the protein concentration of a protein solution with a rather low concentration, which technique would you use and why?
Which minerals make up the majority of bone tissue, and what is their general structural purpose?
Mutants in msh6 have a high mutation rate, not surprising for a protein involved in repair. Double mutants of dbp2 and msh6 show a HUGE increase in mutation rate, far higher than either single mutant.
Suppose that the 3-loci , each with two alleles determine the difference in height between two homozygous strains of a plant.
Describe b riefly the role of HOX genes in brain development. If a twenty-five year old woman using Accutane to treat acne discovers that she is pregnant, what concerns do you have for the embryo/fetus?
The Heliconius butterflies are a classic example of Müllerian mimicry. Which of the following defines a pair of species exhibiting Müllerian mimicry and which of the following defines an obligate mutualistic relationship
What would happen if the I gene was moved to a different location in the genome? What would happen if the lac promoter was moved to a different location?
Do you think that a prenatal test is worthwhile if it detects a genotype, but cannot predict the phenotype? Discuss the risk/benefit issues of this situation.
What will be the sequence of an mRNA transcribed from a segment of the template strand with the following sequence. 5'-ACGTTAA-3'.
Explain the differences between eukaryotic and prokaroytic cells. Include in your discussion three phenotypic systems used to classify microbes.
Liposomes are promising molecules in gene transfer technology because of their similarity to cell membranes and their charge interactions with negatively charged DNA.
Suppose that the each replication fork moves at a rate of 500 base pairs per second, how long would it take to replicate the E. coli chromosome from a single origin of replication?
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