Explanation:
The DNA could be dried -through the process of lyophilization- or stored, as a precipitate of ethanol, in liquid nitrogen (temperatures below -80 degrees Celsius). The aim is to reduce water in the stored samples as much as possible because the water can be involved in natural hydrolytic reactions (depurination, depyrimidination, deamination, and hydrolytic cleavage) that could degrade the nucleic acids of the DNA.
If the DNA is stored while being used regularly it is not advisable to store it as a precipitate of ethanol. It should be stored in aqueous form but in a slightly alkaline pH of about 8.5 to prevent acid-catalysed degradation processes.
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For more on DNA storage check out;
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Hi There!
Question - What evidence did Wegener make use of to develop the theory of continental drift?
Answer - A. Similar fossils were found on different continents.
Why - The reason I say this is because when Wegener found this doscoverey he had proven his theory of continental drift.
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