Genetics: What is a gene?

@article{Pearson2006GeneticsWI,
  title={Genetics: What is a gene?},
  author={Helen R. Pearson},
  journal={Nature},
  year={2006},
  volume={441},
  pages={398-401}
}
The idea of genes as beads on a DNA string is fast fading. Protein-coding sequences have no clear beginning or end and RNA is a key part of the information package, reports Helen Pearson.Genes wilderThe genetic code ‘cracked’,protein synthesis ‘solved’ and complete genomes sequenced: surely we now know what a gene is and what it does. That may be true for those safely outside the field. But for geneticists close to the action, the concept of a gene is getting very complicated indeed. 
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