Question: Modify the function readFASTA in the Biostrings package, or any other FASTA reading function, to (1) transform the data to uppercase, (2) check that only

Modify the function readFASTA in the Biostrings package, or any other FASTA reading function, to (1) transform the data to uppercase, (2) check that only IUPAC symbols are contained in the sequence data, and (3) check the line lengths to see if they are shorter than 80 characters.

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