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Basic Medicine - Set 41
How is the size of molecules under analysis measured?
By measuring the amount of visualising dye used
By measuring the distance moved through a ruler
By running a standard molecule, whose size is known in parallel
There is no exact criterion for doing so
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Explanation
The size of the DNA molecules is measured by a standardized molecule. It is known as DNA ladder. The molecules under analysis are compared with the DNA ladder.
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