How my an error occur during transcription affect the protein that is produced?

An error during transcription can lead to the production of a faulty mRNA molecule, which may contain incorrect sequences or mutations. This altered mRNA can result in a misfolded or nonfunctional protein once it is translated into amino acids. Depending on the nature of the error, the resulting protein might lose its biological function, gain a new and possibly harmful function, or be produced in insufficient amounts, affecting cellular processes and potentially leading to disease.