DNA Flashcards
What is the function of the Start Codon (AUG) in translation?
Initiates translation by signaling the ribosome to begin reading the mRNA.
Sets the correct reading frame for the translation of the entire mRNA sequence into a protein and ensures that the correct amino acid (methionine) is the first to be added to the polypeptide chain.
What are Stop Codons (UAA, UAG, UGA) and their role in translation?
Terminate translation by signaling the ribosome to release the completed polypeptide chain.
Ensure that protein synthesis ends at the correct point, preventing the synthesis of incomplete or nonfunctional proteins.
What happens if there is no stop codon during translation?
The ribosome would continue reading the mRNA and synthesizing a protein that could be too long or have the wrong sequence.
