The Genetic Composition of Reservation Populations: The Blackfeet Reservation, Montana, U.S.A.

ABSTRACT
Blood groups and serum protein genetic systems have been investigated in Blackfeet
Indian samples, drawn from the Blackfeet Reservation, Montana, U.S.A.  Comparisons
of demographic characteristics of the sample with the population from which it was
drawn suggest bases for systematic bias.  The influence of non-random ethnic exogamy
and out-migration on genetic compositions of reservation populations is discussed,
relative to the Blackfeet and Blood divisions of the Blackfeet tribe.  Comparison of
phenotypic distributions within the two divisions suggests possible genetic heterogeneity.
The presence of the transferrin variant Bo-1 within the Blackfeet population is documented
and related to probable gene flow from southwestern U.S. or Mexican sources.
-The Genetic Composition of Reservation Populations:  The Blackfeet Reservation, Montana,
U.S.A.
By Dwight A. Rokala, Herbert F. Polesky and G. Albin Matson
Human Biology, Vol.49, No.1  (February 1977), pp.19-29