One of the lessons from the following paper is that
microsatellite diversity does not always point to the correct
direction of migration. If we knew nothing about Brazilians and
Portuguese, we might be inclined to attribute the lower
Portuguese genetic diversity to migration from Brazil to
Portugal, even though the opposite is the case. Genetica Volume
126, Numbers 1-2 Pages: 251 - 260 Y Chromosome Diversity in
Brazilians: Switching Perspectives from Slow to Fast Evolving
Markers Denise R. Carvalho-Silva et al. We have previously shown
that the Y chromosomes of ‘white’ Brazilians have their
immediate geographical origin in Europe, with low frequency of
sub-Saharan African chromosomes and virtual absence of
Amerindian contribution. The typing of slow evolving
polymorphisms on the Y chromosome also revealed no differences
between Brazilians and Portuguese, the bulk of European
immigrants to Brazil, and even among Brazilians from distinct
regions of Brazil, the latter being in sharp contrast with mtDNA
data. In