RE: markup race

["Bullard, Claude L (Len)" <clbullar@ingr.com>]

An overview paper by Cavalli:

http://www.balzan.it/english/pb1999/cavalli/paper.htm

"Population structure and migratory exchanges between populations are
extremely important for understanding human evolution. They are also
beginning to play a major role in medical genetics, for a simple reason. It
is becoming clear that human population "isolates" are very common. They are
populations who have been through a demographic bottleneck at some stage in
their lifetime and have limited migratory exchange with neighbors. They are
strongly subject to drift, and the result is that their genetic epidemiology
is quite different from that of the general human population. Many
hereditary diseases common elsewhere are rare or absent in some of these
isolates, while other genetic diseases rare or absent in the general
population are common. Examples of such isolates are Ashkenazi Jews, French
Canadians, Afrikaner, and many other smaller populations like that of the
island of Tristan da Cunha, etc. Most hereditary diseases like schizophrenia
or allergies are due to many different genetic causes and are therefore
difficult to study in the general population, but responsible genes are
easier to identify in these isolates."

Len 
http://www.mp3.com/LenBullard

Ekam sat.h, Vipraah bahudhaa vadanti.
Daamyata. Datta. Dayadhvam.h