For more information on the proposed rule, contact Lisa Satterfield, ASHA's director of health care regulatory advocacy, at lsatterfield@asha.org or Neela Swanson, ASHA's director of health care coding policy, at nswanson@asha.org.
The link is that it's genes that are evolving. Evolution refers to the changing of the genetic content of a genome. In other words, the genetic code says one thing; then it says something different. It is the accumulation of these changes that causes the origin of species. http://www.cabdirect.org/abstracts/19432...
In biology, evolution is any change across successive generations in the heritable characteristics of biological populations. Evolutionary processes give rise to diversity at every level of biological organization, from kingdoms to species, and individual organisms and molecules, such as DNA and proteins.