Answer:
UUU
Step-by-step explanation:
A codon is a sequence of three nucleotide bases in a mRNA molecule that specifies an amino acid. During the process of translation, the mRNA strand is read in a group of three nucleotides at a time. A type of RNA called transfer RNA (tRNA) posseses in its structure another group of triplet nucleotides called ANTICODON, which is complementary to the sequence of bases in the mRNA codon.
The tRNA anticodon recognizes and binds to the particular mRNA codon it is complementary to in order to carry the amino acid it specifies to the growing polypeptide chain In this case, the mRNA codon reads AAA. This means that the anticodon on the tRNA that will bind to this codon is UUU.