Genetic evidence (a study published in “Science”) shows that all Iberian hunter-gatherer males were replaced around 2500 BC by immigrants from Central Europe and the Russian steppes. This is the result of a genetic analysis conducted on hundreds of individuals spanning 8,000 years of Iberian history. It shows that the genes of the original Iberian Y chromosome disappear from 2500 BC onward. This occurred in present-day Portugal, Gibraltar, and Spain, with the exception of the Basque Country in the north of the country, where the genes of the original Iberians are still present.
