http:www'ornl'govhgmisgraphicsslidesimages98647'jpg

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http//www.ornl.gov/hgmis/graphics/slides/images/9
8-647.jpg
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RNA - ribonucleic acid
Some viruses store genetic information in form
of RNA. In eukaryotes, RNA is formed from DNA in
a process called transcription where
elimination of introns? (splicing) occurs.?

• RNA is very similar to DNA but has
• Only one strand.
• Ribose as a sugar.
• Uracil (U) instead of Thymine (T).

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Splicing - RNA Synthesis and Processing
Chromosomal DNA
Nuclear RNA
splicing
mRNA
www.albany.edu/achm110/ mrna.gif
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Example of Alternative Splicing
http//cbms.st-and.ac.uk/academics/ryan/Teaching/m
edsci/Medsci4.htm
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Types of RNA
mRNA - A copy of a gene (without introns),
usually encoding protein sequence.
Used in translation tRNA - Small RNA, serves as
adaptor between mRNA and amino acids. rRNA -
One of the structural components of the ribosome
(the translation machine from mRNA to proteins).
http//www.dnaftb.org/dnaftb/24/concept/index.html

See animation at
http//www.dnaftb.org/dnaftb/21/animation/index.ht
ml
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Translation - a process of protein production
from mRNA by the ribosome
RNA animation http//biology.kenyon.edu/courses/b
iol14/slides/slides-5.html