Rather, some 4500 years ago almost all Y-DNA heritage from Iberian admixture of Mesolithic hunter-gatherers and Neolithic farmers was replaced by the R1b lineage of Indo-European herders from the steppe, and the Basque genetic distinctiveness is a result of centuries of low population size, genetic drift, and endogamy.
A ilan 4500 n awatay awa daɣ izjaran etari wan Y-DNA n anmirtay wan Inerian tan imahuya-inafridan win Mesolithic d kel tiwijas win Neolithic ichray ti R1b wan inammugaz win kel Hindo-Eroba n amagon d anmizlay wan etari n Basque tan eqqal a id erawan timad n iwityan n idikud n ichaɣib darosan , assahat n etari d adubin wan ammas n tawset