genes+in+action

If DNA is the ‘blueprint’ of a living organism, RNA is a photo-copy of the blueprint (a working plan, if you like) and amino acids and proteins are the building materials. The human genome contains around 30 000 genes, each of which codes for one protein. There are three main processes in turning DNA into proteins – Replication of the DNA, Transcription (DNA to RNA) and Translation (RNA to proteins). Read about Replication, Transcription and Translation at atdbio. DNA is replicated in the nucleus, prior to mitosis and meiosis. DNA in the nucleus of all eukaryotic cells must then be ‘transcribed’, forming a complementary RNA strand that travels out of the nucleus, into the cytoplasm. From the single strand of messenger RNA, a ribosome ‘reads’ the triple codon and ‘chooses’ a specific amino acid that corresponds with the triplet code. Transfer RNA carries amino acids to the ribosome and serves as the link between the RNA molecule and the forming polypeptide.
 *  DNA Replication Process – YouTube video
 *  Transcription – YouTube video
 *  Translation – YouTube video