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In the friut fly Drosophila melanogaster, vestigial wings and hairy body are produced by two recessive genes located on different chromosomes. THe normal alleles, for long wings and hairless bodies are both dominant. Suppose a vestigial-winged, hairy male is crossed with a homozygous normal female.
a.)What phenotypes would be expected amounf the progeny, and what are the pheotype frequencies?
b.)If the F1 from the cross are permitted to mate randomly among themselves, what are the expected phenotypic frequencies in the F2?
Assume your friend Charles D., is a forty-five year old male who is newly divorced and is living by himself in a new home. He has told you about some health issues including weight loss.
A bacterial gene is known to spontaneously mutate at a high frequency. A study of one mutant gene product shows that the mutant protein made is shorter than the wildtype protein by four amino acids.
Using the data given in table below draw a Lineweaver-Burk plot.
The hypothetical OxyA protein is a surface protein that may have a role in attachment to the surface of the intestinal epithelium but there is evidence that it has a role in invasion. Write the structural formula for isoamyl alcohol.
In a plant the gene e+ codes for a certain enzyme. The gene r+ codes for a regulatory protein that binds to regulatory region of gene e+ in order for transcription to occur.
Determine how much 1.0 M NaOH must be added to a 100 ml of 10 mM H3PO4 to raise the pH of the solution to 7.0?
In a chemical reaction the free energy change (/\Go') is -40 jk/mol and the entropy factor T/\S is 15 kj/mol. the enthalpy change /\H for the reaction is
Since it takes 40 min. to replicate the E. coli chromosome, how can the cell have a cell cycle of 35 minutes?
Suppose you are purifying a protein on a weak cation exchanger (pH 7.5) and it comes off at 300mM salt. predict what salt concentration (lower, same, higher) the protein would come off if you used a strong cation exchanger.
Determine hat will happen to the distribution of estuarine freshwater organisms if the building of a dam upstream reduces the flow of freshwater into the estuary?
Studies have demonstrate that the effect of neuropeptide Y on smooth muscle cells in the uterus is attenuated doing pregancy.
If A/A x B/B is crossed with a/a and the F1 is testcrossed, what is the genotype and percenage of every progeny if the two genes are unlinked;
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