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Download LEQ: How does RNA help to make a protein?
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Transcript
The type of RNA that carriers the genetic information/message from DNA and coveys it to ribosomes where the information is translated into amino acid sequences Introns – noncoding sequences “intervening” sequences; cut out of final mRNA Exons – parts of the gene that are expressed as amino acids; “coding” or “expressed” sequences; splice together to form final mRNA Prior to exiting the nucleus a cap (single G nucleotide) is added to mRNA and a tail (chain of 50 to 250 adinine nucleuotides) Cap and Tail serve to facilitate the movement of mRNA out of the nucleus AND to protect the coding sequence between the cap and tail
