KCET 2014 Biology Solved Paper

In eukaryotes, the genes contain non-coding sequences(introns) intervening between coding sequences (exons). These genes are hence called split genes. Eukaryotic hnRNA transcripts can therefore undergo extensive post-transcriptional processing while still in the nucleus. These introns are removed from the RNA transcripts by a mechanism called RNA splicing during RNA processing prior to their transport to the cytoplasm for translation.