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...
Fundamental to the process is genetic variation upon which selective forces can act in order for evolution to occur. This section examines the mechanisms of evolution focusing on: Descent and the genetic differences that are heritable and passed on to the next generation;