▁populations ▁of ▁contin ental ▁S out heast ▁Asia ▁outside ▁of ▁China ▁display ▁a ▁reduced ▁level ▁of ▁divers ity ▁when ▁compared ▁with ▁populations ▁of ▁South ▁China ▁and ▁ins ular ▁S out heast ▁Asia , ▁which ▁may ▁be ▁evidence ▁of ▁a ▁bott l ene ck ▁associated ▁with ▁the ▁west ward ▁migration ▁and ▁settlement ▁of ▁ancest ral ▁Tai – K ada i - spe aking ▁populations ▁in ▁Ind och ina . ▁ ▁Distribution ▁H ap lo group ▁O - M 1 1 9 ▁line ages ▁are ▁found ▁primarily ▁in ▁S out heast ▁Asian ▁populations ▁of ▁Malays ia , ▁Vietnam , ▁Indones ia , ▁the ▁Philippines , ▁southern ▁China ▁and ▁Taiwan ▁. ▁High ▁frequencies ▁of ▁this ▁ha p lo group ▁have ▁been ▁found ▁in ▁populations ▁spread ▁in ▁an ▁arc ▁through ▁sout he astern ▁China , ▁Taiwan , ▁the ▁Philippines , ▁and ▁Indones ia . ▁It ▁has ▁been ▁found ▁with ▁generally ▁lower ▁frequency ▁in ▁samples ▁from ▁O ce ania , ▁main land ▁S out heast ▁Asia , ▁South west ▁China , ▁North west ▁China , ▁North ▁China , ▁N ortheast ▁China , ▁Korea , ▁Japan , ▁North ▁Asia , ▁and ▁Central ▁Asia . ▁ ▁A ▁ 2 0 0 8 ▁study ▁by ▁Li ▁suggested ▁that ▁the ▁ad mi xture ▁anal ys es ▁of ▁Tai – K ada i - spe aking ▁populations ▁showed ▁a ▁significant ▁gen etic ▁influence ▁in ▁a ▁large ▁proportion ▁of ▁Indones ians . ▁Most ▁of ▁the ▁population ▁samples ▁contained ▁a ▁high ▁frequency ▁of ▁ha p lo group ▁O - M 1 1 9 ▁. ▁