▁M ▁and ▁N ▁derivative ▁cl ades ▁( ~ 7 1 ▁k ya ), ▁the ▁distant ▁location ▁in ▁S out heast ▁Asia ▁of ▁the ▁oldest ▁sub cl ades ▁of ▁M ▁and ▁N , ▁and ▁the ▁compar able ▁age ▁of ▁the ▁pat ernal ▁ha p lo group ▁DE . ▁After ▁an ▁initial ▁Out - of - A frica ▁migration ▁of ▁early ▁an atom ically ▁modern ▁humans ▁around ▁ 1 2 5 ▁k ya , ▁fully ▁modern ▁human ▁L 3 - car ry ing ▁females ▁are ▁thus ▁proposed ▁to ▁have ▁back - migr ated ▁from ▁the ▁mat ernal ▁ha p lo group ' s ▁place ▁of ▁origin ▁in ▁E uras ia ▁around ▁ 7 0 ▁k ya ▁along ▁with ▁males ▁bearing ▁the ▁pat ernal ▁ha p lo group ▁E , ▁which ▁is ▁also ▁proposed ▁to ▁have ▁origin ated ▁in ▁E uras ia . ▁These ▁new ▁E uras ian ▁line ages ▁are ▁then ▁suggested ▁to ▁have ▁largely ▁replaced ▁the ▁old ▁aut och th on ous ▁male ▁and ▁female ▁African ▁line ages . ▁ ▁Other ▁research ▁suggests ▁that ▁earlier ▁waves ▁of ▁modern ▁human ▁migration ▁out ▁of ▁Africa ▁pred ating ▁ 7 0 ky a ▁mostly ▁became ▁ext inct ▁( contrib uting ▁about ▁ 2 % ▁to ▁the ▁ancest ry ▁only ▁of ▁some ▁Ocean ian ▁pe op les ▁such ▁as ▁Pap u ans ) ▁and ▁that ▁instead ▁modern ▁E uras ians ▁descend ▁from ▁a ▁single ▁Out - of - A frica ▁migration ▁occurr ing ▁approximately ▁ 5 0 , 0 0 0 - 7 0 , 0 0 0