DescriptionTRNA-Pheyeastblanco.svg English: tRNA-Phe (tRNAPhe) from yeast showing also modified bases in blue m2G: 2-methyl-guanosine D: 5,6-Dihydrouridine
Adenine because this structure is part of the RNA (preciselly it is the tRNA)..... NOTE: If it is the DNA, the Adenine would be paired with Thymine. 171