Transcript LEQ: How does RNA help to make a protein?


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
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
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
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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