What would happen if a cell transcribed and ranslated a genes intron by mistake
If a cell transcribed and translated a gene's intron by mistake, it would result in the production of a non-functional or abnormal protein. In normal gene expression, introns are non-coding regions of DNA that are removed during RNA processing, and only the exons (coding regions) are translated into protein.
If an intron is transcribed and translated, it would result in the inclusion of non-coding sequences in the final mRNA molecule. When this mRNA is translated by ribosomes, it would produce a protein that contains additional non-functional amino acids or lacks the necessary functional regions.
This aberrant protein may not be able to carry out its intended function or may interfere with normal cellular processes. It could potentially disrupt protein-protein interactions, enzymatic activities, or the protein's proper folding or localization within the cell. Ultimately, the presence of this non-functional or abnormal protein could lead to cellular dysfunction or even disease.