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11 hours ago · Haplogroup R1a. Haplogroup R1a, or haplogroup R-M420, is a human Y-chromosome DNA haplogroup which is distributed in a large region in Eurasia, extending from Scandinavia and Central Europe to Central Asia, southern Siberia and South Asia. [3][2] While one genetic study indicates that R1a originated 25,000 [2] years ago, its subclade M417 ...
11 hours ago · AT&T Inc., an abbreviation for its former name, the American Telephone and Telegraph Company, is an American multinational telecommunications holding company headquartered at Whitacre Tower in Downtown Dallas, Texas. [ 4 ] It is the world's third largest telecommunications company by revenue and the third largest wireless carrier in the United ...
