A three-nucleotide sequence in mRNA that specifies a particular amino acid or polypeptide termination signal; basic unit of the genetic code. In translation, an mRNA codon is recognized by its complementary tRNA anti-codon.
Assuming you do not have a typo in your question, a codon is a triplet of adjacent nucleotides in the messenger RNA chain that codes for a specific amino acid in the synthesis of a protein molecule.
A codon is the triplet sequence in the messenger RNA (mRNA) transcript which specifies a corresponding amino acid (or a start or stop command). An anticodon is the corresponding triplet sequence on...