Behind the Scenes of Gene Expression

@article{Pennisi2001BehindTS,
  title={Behind the Scenes of Gene Expression},
  author={Elizabeth Pennisi},
  journal={Science},
  year={2001},
  volume={293},
  pages={1064 - 1067}
}
As the units of DNA that define the proteins needed for life, genes have played biology9s 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… 
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