Answer:
UUU
Step-by-step explanation:
A codon consists of three nucleotide bases that codes for a specific amino acid.
In the process of protein synthesis, information encoded in the messenger RNA is transferred from it by the tRNA to the rRNA of ribosomes for protein synthesis. Each transfer RNA (tRNA) has an anticodon which can base pair with a codon.
An anticodon consists of three nucleotide base sequence that is complementary to that of a corresponding codon in a messenger RNA (mRNA) sequence.
Since in RNAs, uracil, U, is complementary to adenine, A, the anticodon on the tRNA that binds to the mRNA AAA codon is UUU.