Ancestry of the Iban is predominantly Southeast Asian: Genetic evidence from autosomal, mitochondrial, and Y chromosomes

Simonson, Tatum S., Xing, Jinchuan, Barrett, Robert, Jerah, Edward, Loa, Peter, Zhang, Yuhua, Watkins, W. Scott, Witherspoon, David J., Huff, Chad D., Woodward, Scott, Mowry, Bryan and Jorde, Lynn B. (2011) Ancestry of the Iban is predominantly Southeast Asian: Genetic evidence from autosomal, mitochondrial, and Y chromosomes. PLoS One, 6 1: 1-8. doi:10.1371/journal.pone.0016338


Author Simonson, Tatum S.
Xing, Jinchuan
Barrett, Robert
Jerah, Edward
Loa, Peter
Zhang, Yuhua
Watkins, W. Scott
Witherspoon, David J.
Huff, Chad D.
Woodward, Scott
Mowry, Bryan
Jorde, Lynn B.
Title Ancestry of the Iban is predominantly Southeast Asian: Genetic evidence from autosomal, mitochondrial, and Y chromosomes
Journal name PLoS One   Check publisher's open access policy
ISSN 1932-6203
Publication date 2011-01-01
Sub-type Article (original research)
DOI 10.1371/journal.pone.0016338
Open Access Status DOI
Volume 6
Issue 1
Start page 1
End page 8
Total pages 8
Place of publication San Francisco CA , United States
Publisher Public Library of Science
Language eng
Abstract Humans reached present-day Island Southeast Asia (ISEA) in one of the first major human migrations out of Africa. Population movements in the millennia following this initial settlement are thought to have greatly influenced the genetic makeup of current inhabitants, yet the extent attributed to different events is not clear. Recent studies suggest that south-to-north gene flow largely influenced present-day patterns of genetic variation in Southeast Asian populations and that late Pleistocene and early Holocene migrations from Southeast Asia are responsible for a substantial proportion of ISEA ancestry. Archaeological and linguistic evidence suggests that the ancestors of present-day inhabitants came mainly from north-to-south migrations from Taiwan and throughout ISEA approximately 4,000 years ago. We report a large-scale genetic analysis of human variation in the Iban population from the Malaysian state of Sarawak in northwestern Borneo, located in the center of ISEA. Genome-wide single-nucleotide polymorphism (SNP) markers analyzed here suggest that the Iban exhibit greatest genetic similarity to Indonesian and mainland Southeast Asian populations. The most common non-recombining Y (NRY) and mitochondrial (mt) DNA haplogroups present in the Iban are associated with populations of Southeast Asia. We conclude that migrations from Southeast Asia made a large contribution to Iban ancestry, although evidence of potential gene flow from Taiwan is also seen in uniparentally inherited marker data.
Keyword Austronesian-speaking peoples
Modern humans
Population-genetics
Last deglaciation
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Queensland Brain Institute Publications
Official 2012 Collection
 
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Created: Sun, 13 Mar 2011, 10:04:56 EST