One of the clients you worked with in your clinical experience is Native American, a member of the Navajo Nation. He has symptoms of neuropathy and an autoimmune disorder

One of the clients you worked with in your clinical experience is Native American, a member of the Navajo Nation. He has symptoms of neuropathy and an autoimmune disorder. He relays that it runs in his family and many Navajo people that he knows have these problems. He points out that it was worse in his parents and grandparents’ generations. You decide to do some reading and learn that members of the Navajo and Apache Tribes have a genetic predisposition for these problems.
What does natural selection mean regarding population genetics when considering the Navajo and Apache Nations?
What is the difference between mutation, migration, selection, and genetic drift?
How could population genetics impact care to clients?