GC Nucleotide Content Ratio

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This Demonstration represents how the number of nucleotides influences the guanine-cytosine (GC) content, which is the percentage of nitrogenous bases in a DNA molecule. Simply drag the contents of specific nucleotides and watch the GC percentage change next to the graph. The formula for the GC fraction is .

Contributed by: Blaž Škrlj (December 2014)
Open content licensed under CC BY-NC-SA




[1] R. F. Boyer, Concepts in Biochemistry, Hoboken, NJ: Wiley, 2006.

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