Gene, evolutionarily conserved
A gene that has remained essentially unchanged throughout evolution. Conservation of a gene indicates that it is unique and essential. There is not an extra copy of that gene with which evolution can tinker. And changes in the gene are likely to be lethal.

Medical dictionary. 2011.

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  • Evolutionarily conserved gene — A gene that has remained essentially unchanged throughout evolution. Conservation of a gene indicates that it is unique and essential. There is not an extra copy of that gene with which evolution can tinker. And changes in the gene are likely to… …   Medical dictionary

  • Conserved non-coding sequence — A conserved non coding sequence (CNS) is a DNA sequence of noncoding DNA that is evolutionarily conserved. These sequences are of interest for their potential to regulate gene production.[1] CNSs in plants[2] and animals[1] are highly associated… …   Wikipedia

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