Question: In R, write a function that will accept a character string representing a nucleic acid sequence and outputs the percent of bases that are either

In R, write a function that will accept a character string representing a nucleic acid sequence and outputs the percent of bases that are either G or C (GC content). Note that the sequence may consist of both upper and lower case letters. Test your function using the sequence: GCGCTATCAATTCGC

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