Question

suppose the following amino acid chain was created based on a students transcription and translation: tyr-leu-pro-met in the chain, which data show a possible source of error? explain the error.

Explanation:

In the process of translation, the start codon (AUG) codes for the amino acid Methionine (Met). Methionine should be the first amino acid in a newly synthesized polypeptide chain. In the given amino - acid chain "Tyr - Leu - Pro - Met", Met is not the first amino acid. This indicates that there might be an error in the transcription or translation process. Maybe the start codon was not recognized properly at the beginning of the mRNA sequence during translation, or there was an error in the transcription of the DNA sequence to mRNA such that the correct start signal (AUG) was not placed at the beginning of the mRNA.

Answer:

The position of Met (Methionine) is an error. Met should be the first amino acid as it is coded by the start codon (AUG) in translation.