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Two E. coli genes, A and B, are known from mapping experiments to be very close to each other. A deletion mutation is isolated that eliminates the activity of both A and B. Neither the A nor B protein can be found in the mutant, but a novel protein is isolated in which the amino-terminal 30 amino acids are identical to those of the B gene product and the carboxy-terminal 30 amino acids are identical to those of the A gene product.
a) With regard to the 5' - 3' orientation of the nontranscribed DNA strand, is the order of the genes AB or BA?
b) What number of bases is deleted in the coding region? How do you know?
The R and S loci are 35 m.u. apart. If a plant of genotype RS/rs is selfed, what progeny in what proportions will be seen?
plot the trajectory of the population over 30 years, beginning with a population size that is exactly at K.
Assume you ask is to work with the genetic code and examine the structure and characteristics of the amino acids used to make proteins and answer the following question.
Suppose you were given ten ml of milk. You added 0.5 ml of the milk to 9.5 ml of sterile water. After mixing, one ml of the diluted milk was added to 99 ml of sterile water.
Discuss the difference between inorganic and organic molecules? Do some research since cannot be answered in one sentence.
Determine which organelle found in plant cells is responsible for converting sunlight energy into the chemical energy found in sugar molecules?
Assume you were given a tube having 1 ml of frozen Staphylococcus epidermidis culture known to contain 5.3 x 103 bacteria/ml. You were told to thaw it by heating at 80°C for 20 min,
Consider the meaning of the term "ecology." How do the ideas of energy and chemical cycles, community structure, biodiversity and succession fit together to form the basis of the way the natural world works?
In what environments would you expect obligate homeotherms to have the most significant advantages, and in what environments might facultative homeotherms have an edge?
You are to convert the 5 mM fumaric acid in a waste stream into malate using fumarase immobilized on nonporous spherical particles. The enzyme has a turnover number of 23/sec, and a Km of 1.55 mM.
Swelling of the abdomen and legs due to edema is characteristic of starving children with kwashiorkor, protein-deficiency disorder. What is the relationship between this symptom and procedure of capillary exchange.
Based on the data, propose a hypothetical biochemical explanation for the colors of the flowers in the F2 progeny. Again, explain your reasoning.
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