Etruscan people are autochthonous in central Italy". A 2019 genetic study published in the journal Science analyzed the remains of eleven Iron Age individuals from the areas around Rome, of which four were Etruscan individuals, one buried in Veio Grotta Gramiccia from the Villanovan era (900-800 BC) and three buried in La Mattonara Necropolis near Civitavecchia from the Orientalizing period (700-600 BC). The study concluded that Etruscans (900–600 BC) and the Latins (900–500 BC) from Latium vetus were genetically similar, with genetic differences between the examined Etruscans and Latins found to be insignificant. The Etruscan individuals and contemporary Latins were distinguished from preceding populations of Italy by the presence of ca. 30% steppe ancestry. Their DNA was a mixture of two-thirds Copper Age ancestry (EEF + WHG; Etruscans ~66–72%, Latins ~62–75%), and one-third Steppe-related ancestry (Etruscans ~27–33%, Latins ~24–37%). The only sample of Y-DNA extracted belonged to haplogroup J-M12 (J2b-L283), found in an individual dated 700-600 BC, and carried exactly the M314 derived allele also found in a Middle Bronze Age individual from Croatia (1631-1531 calBCE). While the four samples of mtDNA extracted belonged to haplogroups U5a1, H, T2b32, K1a4. Therefore, Etruscans had also Steppe-related ancestry despite speaking a non-Indo-European language. A 2021 genetic study, published in the journal Science Advances, analyzed the autosomal DNA of 48 Iron Age individuals from Tuscany and Lazio, spanning from 800 to 1 BC, and confirmed that in the Etruscan individuals was present the ancestral component Steppe in the same percentages found in the previously analyzed Iron Age Latins, and in the Etruscan DNA was completely absent a signal of recent admixture with Anatolia and the Eastern Mediterranean, concluding that the Etruscans were autochthonous and they had a genetic profile similar to their Latin neighbors. Both Etruscans and Latins joined firmly the European cluster, west of modern Italians. The Etruscan cluster is a mixture of WHG, EEF, and Steppe ancestry; 75% of the Etruscan male individuals were found to belong to haplogroup R1b, especially R1b-P312 and its derivative R1b-L2 whose direct ancestor is R1b-U152, while the most common mitochondrial DNA haplogroup among the Etruscans was H. In his 2021 book, A Short History of Humanity, German geneticist Johannes Krause, co-director of the Max Planck Institute for Evolutionary Anthropology in Jena, concludes that it is likely that the Etruscan language (as well as Basque, Paleo-Sardinian, and Minoan) "developed on the continent in the course of