Uhlalutyo lucebisa ukuba kusenokwenzeka ukuba ukhokho oqhelekileyo weelwimi zaseIndo-European, ezibandakanya isiNgesi kunye nesiSanskrit, kusenokwenzeka ukuba zathethwa malunga neminyaka eyi-8,100 eyadlulayo.
Izazinzulu, kuquka ezo zisuka kwiMax Planck Institute for Evolutionary Anthropology eJamani, ziye zabhengeza ukuba uphando lwabo “luyinkqubela ephawulekayo” ekuqondeni isiqalo seelwimi zaseIndo-European, ingxoxo eqhubeke phantse iminyaka engamakhulu amabini.
Kuye kwacetywa iithiyori ezimbini ukuze kucaciswe imvelaphi yosapho lweelwimi olusetyenziswa ngoku phantse kwisiqingatha sabemi behlabathi.
I-Steppe hypothesis icebisa ukuba ukuqala koku kunokulandwa emva kwingingqi yePontic-Caspian Steppe malunga neminyaka engama-6,000 eyadlulayo.
I-"Anatolian" okanye "ukulima" i-hypothesis iphakamisa ukuba imvelaphi yento idibene nokuqaliswa kwezolimo malunga neminyaka eyi-9,000 edlulileyo.
Nangona kunjalo, uphando lwangaphambili malunga nosapho lolwimi lwase-Indo-European luvelise iziphumo ezahlukeneyo ngenxa yokungachaneki nokungahambelani kwedatha esetyenzisiweyo.
Ukuze kuhlangatyezwane nezi ntsilelo, ingqokelela yeengcali zeelwimi ezingama-80+ ezisuka kwihlabathi jikelele ziqulunqe ikhorasi yamagama angundoqo ukusuka kwiilwimi ezili-161 zaseIndo-European, eziquka iilwimi ezingama-52 zakudala okanye zembali.
Uhlalutyo lwakutsha nje, oluvela kwi inzululwazi, yaphanda enoba iziyelelane ezidala ezibhalwayo, ezinjengesiLatini samandulo nesiVedic Sanskrit, yayizezona zizandulela zolwimi lwale mihla lwesiRomance nesi-Indic, ngokulandelelanayo.
Abaphandi baye bahlola imvelaphi ekwabelwana ngayo ye-core lexicon kwiilwimi ze-100 zangoku kunye ne-51 yeelwimi zakudala.
Kubonakala, ngokophando, ukuba intsapho yolwimi lwase-Indo-European ikhona iminyaka eyi-8,100 kwaye kwiminyaka eyi-7,000 eyadlulayo, amasebe amahlanu amakhulu asele ahlulwe kuyo.
Ngokutsho kombhali-mbhali uRussell Gray, ukulandelelana kwezifundo kuhlala kunamandla xa kuvavanywa kwiimodeli ezahlukeneyo ze-phylogenetic kunye nohlalutyo lovakalelo.
UGqr Gray uthe indibaniselwano ye-DNA yamandulo kunye ne-phylogenetics yolwimi inokunika impendulo kwi-nigma ekudala ikho yase-Indo-European, eyindibaniselwano yokulima kunye neengqikelelo zeSteppe.
Ngokusekwe kuphando lwamva nje, ihypothesis eyingxubevange iye yacetyiswa ukuze kuqaliswe iilwimi zaseIndo-European. Icebisa ilizwe eliphambili kumazantsi eCaucasus kunye nekhaya lesibini kwiSteppe, apho ezinye iilwimi zaseIndo-European zafika eYurophu ngokufuduka kwabantu baseYamnaya kunye neCorded Ware.
UPaul Heggarty, igalelo kuphononongo, wathi eyona datha yakudala yamva nje ye-DNA ikhomba kwisebe lase-Anatolian lase-Indo-European elivela kwindawo ethile kufutshane ne-arc esemantla ye-Fertile Crescent, kunokuba i-Steppe.
UGqr. Heggarty ucebise ukuba itopology yolwimi losapho kunye nemihla yokwahlulwa komnombo yalatha kwamanye amasebe ekusenokwenzeka ukuba asasazeka ukusuka kuloo ndawo ngokuthe ngqo, hayi ngeSteppe.
