* Codons: Codons are three-nucleotide sequences in mRNA that specify which amino acid should be added to a growing polypeptide chain during protein synthesis.
* Stop Codons: There are three stop codons (UAG, UAA, and UGA) that signal the ribosome to stop translating the mRNA sequence. These codons don't code for any amino acid.
* ATC as a Stop Codon: While ATC is a codon, it is not a stop codon. It actually codes for the amino acid isoleucine (Ile).
Therefore, ATC is not a stop codon, it's a codon that specifies the amino acid isoleucine.
Let me know if you have any other questions about mRNA or protein synthesis!
