Inserting one gene into the sequence of another gene in a eukaryotic cell typically results in the transcription of the entire sequence, provided that the tail of the inserted gene is removed to allow RNA polymerase to continue reading. However, the translation may yield a non-functional protein, especially if the insertion occurs within an intronic region, as this segment would be spliced out. This process is similar to the creation of fusion proteins, such as those used for fluorescent tagging, but successful expression depends on the correct in-frame insertion of the gene. There remains a risk that the resulting fusion protein may not function properly.