photo credit: firefly with glow, by terry priest on flickr (creative commons)//flic.kr/p/h1kaj
TRANSCRIPT
Photo credit: Firefly with glow, by Terry Priest on Flickr (Creative Commons)http://flic.kr/p/h1KAJ
http://learn.genetics.utah.edu/content/molecules/firefly/
(Protein)
Transcription animation:http://www.stolaf.edu/people/giannini/flashanimat/molgenetics/transcription.swf
Translation animation:http://www.stolaf.edu/people/giannini/flashanimat/molgenetics/translation.swf
Transcription
The decision to transcribe a gene is the most important step in the control of gene expression.
Transcription starts and stops at distinct sites at the ends of a gene.
A gene
Animation
Eukaryotic Genes are Segmented
Genes are made of parts represented in the mRNA (exons) and parts that are transcribed but not present in the mRNA (introns).
In some genes more than 90% of the pre-mRNA is destroyed, never to appear in the mRNA.
Introns are removed from the primary transcript and exons are spliced together to make mRNA.
Animation
Alternative Splicing – More Bang for the Buck
This has the consequence that the count of our genes (~20,000) seriously underestimates the count of our different proteins.
The Genetic Language Uses 4 Letters Written Into 3-Letter Words
http://learn.genetics.utah.edu/content/begin/dna/firefly/
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