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Question: Scientists can use mutants to study metabolic pathways. These organisms have a mutation in a gene encoding a metabolic pathway enzyme that results in the inactivation of that enzyme. Saccharomyces cerevisiae (a yeast species) mutants are available that grow on fructose, but not glucose. Which of the following glycolytic enzymes is mostly likely affected?
1. phosphoglycerate kinase2. phosphoglycerate mutase3. pyruvate kinase4. phophoglucose isomerase (phosphohexose isomerase or glucose-6-phosphate isomerase)5. enolase
An allele A undergoes mutation to the allele a at the rate of ten to five per generation. If a very large population is fixed for A, what is the expected frequency of A in the following generation?
In a series of experiments, genes that code for mutant forms of a receptor tyrosine kinase are introduced into cells. The cells also express their own normal form of the receptor from their normal gene.
make an experiment to test what happens (i.e. what is the final plasmid DNA content of cells in a transformed colony) if a competent cell is transformed with circular double-stranded plasmid DNA where there is a mis-match (e.g. a G-T base-pair ins..
Calculations must be made assuming that the minimum significant number has four significant digits. If all of phosphorus in a 3.00 gram sample of MgNH4PO4 is extracted and used to make a diphosphorus pentaoxide, what mass of P2O5 could be produced.
Unlike bilaterally symmetrical animals, radically symmetrical animals are almost never able to move themselves from place to place.
When chromatin from any eukaryote is digested with micrococcal nuclease and fractionated using electrophoresis, DNA fragments of approximately two hundred base pairs in length are observed.
If you cross a black fur rabbit and a white fur rabbit, the resulting offspring look gray, when examining closely the fur of gray rabbit consist of both black and white hairs. What type of non-mendelian inheritance is this.
A sunflower population in Hardy-Weinberg equilibrium has the given allele frequencies for petal color: 0.75 dominant, 0.25 recessive.
While walking throughout a forest you notice that someone has carved his or her initials into the bark of a tree. The initials are exactly 1.5 meters from the ground. How far from grounds will the initials be next year and the year after that? Why? E..
One of the major categories of receptors in the plasma membrane reacts by forming dimmers, adding phosphate groups, and then activating relay proteins. Which kind does this.
An organism is discovered that consumes a considerable amount of sugar, yet does not gain much weight when denied air. Curiously, the consumption of sugar increases as air is removed from the organism's environment, but the organism seems to thrive e..
Discuss similarities and differences of artificial selection and genetic engineering of organisms. In your answer also include one advantage and one disadvantage for each technique, as well as one example of each.
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