Final answer:
The anticodon for the tRNA that delivers tryptophan is ACC, which pairs with the mRNA codon UGG for tryptophan during protein synthesis.
Step-by-step explanation:
If tryptophan is amino acid #67 in a particular protein, the anticodon of the transfer RNA (tRNA) that delivered tryptophan to this location is complementary to the mRNA codon for tryptophan.
The mRNA codon for tryptophan is UGG.
Therefore, the anticodon is ACC, which is able to base pair with UGG through hydrogen bonding between adenine and uracil, and between guanine and cytosine.
The process of translation in protein synthesis ensures that the correct tRNA, with the appropriate anticodon and its attached amino acid, is brought to the mRNA strand to facilitate the alignment of amino acids in the polypeptide chain, following the genetic code.