DNA Transcription
RNA polymerase enzymes bind to the DNA, one binded a complementary mRNA molecule is created. MRNA (messenger RNA) is a molecule that copies DNAs genetic message and delivers it to the ribosomes in the cytoplasm. The reason MRNA is needed to deliver this message instead of DNA, is due to the fact that DNA is too large to leave the nucleus.
Role of MRNA
RNA splicing
in short, splicing is the process in which a mature MRNA is made from a primary MRNA for protein synthesis (translation).
This process happens when regions which don’t code (introns) within the primary MRNA are removed and the coding regions (exons) are joined together, creating a mature MRNA.
This process happens to get rid of unnecessary parts and only keep coding sequences needed for protein synthesis (translation).
