bushrajmaBushra
27.11.2019 •
Biology
You are given two solutions containing different purified dnas. one is from the bacterium p. aeruginosa and has a g + c composition of 68%, whereas the other is from a mammal and has g + c composition of 42%. you measure the uv absorbance of each solution as a function of increasing the temperature. which solution will yield the higher tm value and why?
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Ответ:
The solution of P. aeruginosa will yield higher Tm value.
Explanation:
The solution of P.aeruginosa contain 68% G+C composition as a result the DNA of P.aeruginosa is more stable than the DNA of mammal contain only 42% G+C composition.G+C composition is most stable because guanine is linked to cytosine by 3 hydrogen bonds whereas adenine linked to thymine by 2 hydrogen bonds.
As P.aeruginosa DNA is more stable than mammalian DNA,as a result the DNA solution of P.aeruginosa will yield high Tm(melting temperature) value than that of mammalian DNA.
Ответ:
Cell, in science, the essential film bound unit that contains the key atoms of everyday routine and of which all experiencing things are created. A solitary cell is frequently a total creature in itself, for example, a bacterium or yeast. Different cells gain particular capacities as they develop.
Explanation: