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The bacterium Helicobactor pylori naturally grows in human and animal stomachs at pH about 2. It will grow also at pH 2 and pH 7 in culture media. It's genome sequence has been determined and annotated. You are assigned to determine which genes, if any, are highly expressed and which are repressed by growth at low pH. How would you do that?
What are the two exceptions to the general rule that all cells in the human body contain a complete, identical copy, of a person's DNA?
If a transcription factor causes DNA to bend, altering its structure by initiating a loop-like conformation, does this affect its electrophoretic mobility on a gel? If so, would the DNA:protein complex migrate at a slow rate?
How to solve the complicated questions of pedigree . How to identify wheather it is dominant or reccessive its genotype
A homozygous plant with 20 cm diameter flowers is crossed with a homozygous plant of the same species that has a 40cm diameter flowers. The F1 plants all have flowers 30cm in diameter.
what are stimuli?
Summarize the derivation, according to germ layer origin, of the important structures of the 4-day chick. Indicate the mechanisms of their formation. Include process of invagination, evagination (outgrowth of layer), cellular migration, and thicke..
Po2 (torr) has the following values 1,5,10,15,20,25,30,35,40,50 Y has the following values 0.001, 0,09, 0.36, 0.60, 0.78, 0.86, 0.91, 0.93, 0.95, 0.97. Graph the data above as a hill plot and estimate the "n" value of mutant hemoglobin.
many factors may affect the growth of this extraterrestial bacteria. Name these factors. Choose two nutritional factors and describe how you would test their effects.
As a 1st step towards cloning the ding-dong gene from Drosophila, you find a transposon insertion within the gene.
Energy is stored in different forms in the body. ATP is very unstable and is put to use very quickly in cells. Other storage molecules last longer.
What happens if intrapleural pressure becomes equal to atmospheric pressure. McCloskey implies that evolution has displaced the need for a designer.
Discuss how does the maximum flow rate during the cough compare to the maximum expiratory flow rate during normal breathing?
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