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What property of the growth medium ensures the isolation of nitrogen fixing bacter? Is this an example of a selection or an enrichment? please explain your answer.
A young researcher at National Institute Health and interested in eye development, and hoping to find a cure to blindness in your lifetime
Tina put a culture of Escherichia cells in a medium containing glucose and nitrate (NO3-) on a shaker and turned on the shaker for aeration. Describe the differences between phototrophy involving bacteriorhodopsin and phototrophy involving bacterioch..
What is a main property of DNase that makes it useful for assessing whether chromatin is in a closed (tightly condensed) or open (loosely packed) configuration.
How does gene flow influencethe effects of genetic drift? Does selection counteract drift and gene flow? How do these interactions vary with populationsize? Discuss in reference to Endler's model presented in lecture.
Face and body creams that are marketed to women in order to "rejuvenate the skin, and get rid of the fine lines and wrinkles" consists of large quantities of collagens.
Compute the number of RBC if the dilution is 1:50, the cell count is 400 cells counted in five (5) RBC squares of the hemocytometer.
With the completion of the human genome and the identification of various genes, it may be possible to determine whether an individual has a particular disease.
Explain the Hershey-Chase experiment. Describe in your own words, as if you were talking to someone with no genetics background.
Several times, pathogens in foods occur in low numbers and are mixed in with many non-pathogens. What did you learn about in.
The daughter of a colorblind man called John, who herself has normal vision, has a colorblind husband. What are the odds that the first child of the pair will be a boy with normal vision? What about the chances that their daugthers will be colorbl..
Erma and Harvey were a compatible barnyard pair, but a curious sight. Harvey's tail was only 6 cm while Erma's was 30 cm. Their F1 piglet offspring all grew tails that were 18 cm.
Herparin is a mucopolysaccharide extracted from beef lung and liver that inhibits the action of thrombin. what effect would thrombin have on the prothrombin time and APTT? why was citric acid or oxalic acid used as an anticoagulant instead of hepa..
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