UpA Islands : counts 'AU'/'AT' dinucleotides in a DNA/RNA sequence
y = btd_UpA(x)
String of single-letter codes specifying a DNA/RNA sequence
Count of 'AT'/'AU' dinucleotides (decimal integer)
y = btd_UpA(x)
count of all dinucleotides for which a
Uracil/Thymine nucleotide occurs next to a Adenine nucleotide.
--> y = btd_UpA("ATCGATCGATCGTATATGCTAGCTA") y = 5.