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...
Human evolutionary genetics studies how one human genome differs from another human genome, the evolutionary past that gave rise to it, and its current effects. For most DNA sequences, humans and chimpanzees appear to be most closely related, but some point to a human-gorilla or chimpanzee-gorilla clade. 2  The human genome has been sequenced, as well as the chimpanzee genome. 3  Humans have 23 pairs of chromosomes, while chimpanzees, gorillas, and orangutans have 24.