Data on the GM and KM haplotypes and RFLPs in the immunoglobulin
IGHG loci are reported
intending to evaluate the genetic contribution of the different
populations (Europeans and Africans)
who settled Tenerife Island. The GM and KM allotypic systems reveal an
estimated European
genetic admixture of 88%. The only possible African contribution is the
presence of the
GM*1,17;..;5* haplotype (2.5%),
but no other traces of Black African characteristic haplotypes are
found. Although new RFLP haplotypes are described, DNA variation is similar
to that reported in
Caucasoids with a marked absence of restriction fragments characteristic
of Black Africans.