In cattle one of the first contributions of DNA research to reconstruct the domestication
was a comparison of the mtDNA of taurine and indicine cattle [37]. The divergence of their
control regions implied separate domestication events, which most likely started around 8,000
years BC in South-western Asia and the Indus Valley respectively [38]. Zebus were probably
imported into Africa after the Arabian invasions in the 7th century [39]. Interestingly, the
discovery that African zebus carry taurine mtDNA implies that African zebus were the result of
crossing zebu bulls with taurine cows [39].