Q.What is exon and intron of a DNA? What is biopiracy? (2+1)

In bacteria, which lack a nuclear membrane, mRNA is typically translated at the ribosome directly and immediately, with little further modification. In eukaryotic cells, however, the primary transcript produced by RNA polymerase II, called heterogeneous nuclear RNA (hnRNA), must undergo several processing steps inside the nucleus before it is exported as mature, translatable mRNA. Splicing removes the non-coding intron sequences that interrupt a gene's coding exon sequences, and joins the exons together — carried out with great precision by a large ribonucleoprotein complex called the spliceosome. 5' capping chemically adds a modified guanine nucleotide (7-methylguanosine) to the transcript's 5' end, protecting it from degradation and helping the ribosome recognise it …