Recent genetic studies concluded in 2005 have shown that a significant portion of the population has varying degrees of Amerindian and to a lesser extent African ancestry. The first study on the matter in Argentina was conducted in 1985. A scientific team from the University of Buenos Aires School of Medicine analyzed the blood types of 73,875 donors from the Blood Bank of the Policlínico Ferroviario Central, with the purpose of finding European and Amerindian genetic components. The samples were organized following a map of the country, and the study concluded that “the percentages found in native population were: European component, 81.47%-81.77%, and Amerindian component 18.23%-18.57%.”
Another study of the Amerindian ancestry of Argentines was headed by Argentine geneticist Daniel Corach of the University of Buenos Aires. The results of this study in which DNA from 320 individuals in which 9 Argentine provinces were examined showed that 56% of these individuals had at least one recent Amerindian ancestor. Another study on AfricanMost Argentines outside Argentina are people who have migrated from the middle and upper middle classes. According to official estimates there are 600,000 worldwide Argentine, according to estimates by the International Organization for Migration are about 806,369 since 2001. It is estimated that their descendants would be around 1,900,000. The first wave of emigration occurred during the military dictatorship between 1976 and 1983, with principally to Spain, USA, Mexico and Venezuela. During the 1990s, due to the abolition of visas between Argentina and the United States, thousands of Argentines emigrated to the North American country. The last major wave of emigration occurred during the 2001 crisis, mainly to Europe, especially Spain, although there was also an increase in emigration to neighboring countries, particularly Brazil, Chile and Paraguay. ancestry was also conducted by the University of Buenos Aires in the city of La Plata.
