gene flow indo europeans h hubey made readers list aware interesting article appeared june 24 1995 issue science news concerning evidence dna data indicating gene flow anatolia europe beginning around 9 000 years bp hubey also points genetic evidence nomads central eurasian yamna culture spread westward europe approximately 5 500 years ago indeed reasonable link first migration spread agriculture follow migrated spoke form indo european pre proto dialects thereof follow possible expansions responsible spread different subfamilies indo european languages know cuneiform records 3 000 bce anatolia populated least part full people speaking caucasian languages eastern anatolia hurrian later attested closelyrelated urartean spoken languages convincingly shown sergej starostin igor diakonoff related northeast caucasian central anatolia hattic spoken later replaced hittite indo european language diakonoff maintains hattic also caucasian language finally diakonoff claimed language spoken gutians qutians caucasian language moreover unambiguous references indo european people languages written records ancient near east 2 000 bce first references hittites generally agreed specialists example gamkrelidze mellaart puhvel steiner among others hittites invaders imposed upon populations speaking caucasian languages particular hattic thus much stronger evidence prior 2 000 bce anatolia populated speakers caucasian languages speakers indo european languages thus follows logically one attempt correlate gene flow 9 000 bp anatolia europe language spread one would tend think early forms caucasian rather indo european allan r bomhard boston massachusetts