groups in southern China, and haplogroup O1b2, which is common in today's Japanese, Koreans and, are the carriers of early rice-agriculturalists from Indochina. Another study suggests that the haplogroup O1b1 is the major Austroasiatic paternal lineage and O1b2 the "para-Austroasiatic" lineage of the, Korean and Yayoi people. A 2021 study by Tagore et al. found that the proto-Austroasiatic speakers split from an Basal East Asian source population, native to Mainland Southeast Asia and Northeast India, which also gave rise to other East Asian-related populations, including Northeast Asians and Indigenous peoples of the Americas. The proto-Austroasiatic speakers can be linked to the Hoabinhian material culture. From Mainland Southeast Asia, the Austroasiatic speakers expanded into the Indian-subcontinent and Maritime Southeast Asia. There is evidence that later back migration from more northerly East Asian groups (such as Kra-Dai speakers) merged with indigenous Southeast Asians, contributing to the fragmentation observed among modern day Austroasiatic-speakers. In the Indian subcontinent, Austroasiatic speakers, specifically Mundari, intermixed with the local population. Furthermore they concluded that their results do not support a genetic relationship between Ancient Southeast Asian hunter-gatherers (Hoabinhians) with Papuan-related groups, as previously suggested by McColl et al. 2018, but that these Ancient Southeast Asians are characterized by Basal East Asian ancestry. The authors finally concluded that genetics do not necessarily correspond with linguistic identity, pointing to the fragmentation of modern Austroasiatic speakers. Larena et al. 2021 could reproduce the genetic evidence for the origin of Basal East Asians in Mainland Southeast Asia, which are estimated to have formed about 50kya years ago, and expanded through multiple migration waves southwards and northwards. Early Austroasiatic speakers are estimated to have originated from an lineage, which split from Ancestral East Asians between 25,000 and 15,000 years ago, and were among the first wave to replace distinct Australasian-related groups in Insular Southeast Asia. East Asian-related ancestry became dominant in Insular Southeast Asia already between 15,000 years to 12,000 years ago, and may be associated with Austroasiatic groups, which however got again replaced by later Austronesian groups some 10,000 to 7,000 years ago. Early Austroasiatic people were found to be best represented by the Mlabri people in modern day Thailand. Proposals for Austroasiatic substratum among later Austronesian languages in Western Indonesia, noteworthy among the Dayak languages, is strengthened by genetic data, suggesting Austroasiatic speakers were assimilated by Austronesian speakers. A study in November 2021 (Guo et al.) found that modern East-Eurasians