CULT: Behind the Scenes of Gene Expression
- Subject: CULT: Behind the Scenes of Gene Expression
- From: S* S*
- Date: Sat, 11 Aug 2001 09:11:40 -0400
- Importance: Normal
This article will be available in 6 months for free, or you can pay to see
it now, find the most recent issue of Science in your library or on the
newsstand (probably only in large metropolitan areas with well stocked
newsstands):
Behind the Scenes of Gene Expression
Elizabeth Pennisi
As the units of DNA that define the proteins needed for life, genes have
played biology's center stage for
decades. But work over the past few years shows that gene expression is not
determined solely by the DNA
code itself but by an assortment of proteins and, sometimes, RNAs that tell
the genes when and where to turn
on or off. Such epigenetic phenomena orchestrate the many changes through
which a single fertilized egg cell
turns into a complex organism. And throughout life, they enable cells to
respond to environmental signals
conveyed by hormones, growth factors, and other regulatory molecules
without having to alter the DNA itself.
http://www.sciencemag.org/cgi/content/summary/293/5532/1064
I would suspect that this would be some heavy going to get through this
article, but it may answer some questions that have been posed here about
the genetics of iris and how they are expressed.
\\Steve//
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