Abstract:
:The Tai-Kadai (TK) language family is thought to have originated in southern China and spread to Thailand and Laos, but it is not clear if TK languages spread by demic diffusion (i.e., a migration of people from southern China) or by cultural diffusion, with native Austroasiatic (AA) speakers switching to TK languages. To address this and other questions, we obtained 1234 complete mtDNA genome sequences from 51 TK and AA groups from Thailand and Laos. We find high genetic heterogeneity across the region, with 212 different haplogroups, and significant genetic differentiation among different samples from the same ethnolinguistic group. TK groups are more genetically homogeneous than AA groups, with the latter exhibiting more ancient/basal mtDNA lineages, and showing more drift effects. Modeling of demic diffusion, cultural diffusion, and admixture scenarios consistently supports the spread of TK languages by demic diffusion.
journal_name
Hum Genetjournal_title
Human geneticsauthors
Kutanan W,Kampuansai J,Srikummool M,Kangwanpong D,Ghirotto S,Brunelli A,Stoneking Mdoi
10.1007/s00439-016-1742-ysubject
Has Abstractpub_date
2017-01-01 00:00:00pages
85-98issue
1eissn
0340-6717issn
1432-1203pii
10.1007/s00439-016-1742-yjournal_volume
136pub_type
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