Experiments have demonstrated that the "words" of the genetic code (the units that specify amino acids) are   Question 43 options:   three-nucleotide sequences (= triplets)   two-nucleotide sequences (= duplets)   single nucleotides   nucleotide sequences of various lengths   3-carbon sugar molecules

In RNA, an atypical base pair is able to form between guanine and uracil. This base pair allows a single tRNA molecule to recognize more than one codon using its one anticodon sequence. It requires a shift in position of the two nucleotides. Guanine and uracil come together in this unusual pair via 2 hydrogen bonds. Based on what you know about hydrogen bond formation and base pairing, draw a guanine nucleotide and a uracil nucleotide hydrogen bound to one another.