Gene | VOL. 823
Read

Post-Austronesian migrational wave of West Polynesians to Micronesia.

Publication Date May 20, 2022

Abstract

This study examines Y-chromosome and mtDNA markers in the population of the island of Kiritimati in the context of geographically targeted reference populations from the Pacific. Kiritimati derives its population from the atoll islands of the Gilbert Archipelago and representsa geographicaltransitional region between Micronesia, Polynesia and Melanesia that likely played a critical role during theAustronesian expansion. The large presence(84.1%)of individuals withO-M175, O2a-M324 and O2a2b-P164 sub-haplogroups, 69.9% being O2a2b-P164, the Y-STR homogeneity within O2a2b-P164 and the very recent age of the sub-haplogroup(363-548 years ago)inKiritimati suggestthe arrival ofa genetically homogenous population to the Gilberteses followed by a population expassion.The close Y-STR haplotype affinities with profiles from the Samoa and Tonga Archipelagos point to an unprecedented massive post-Austronesian expansionexodus from West Polynesia.Contrasting the abundance of AustronesianO2a2b-P164 sub-haplogroup, the most abundantMelanesian/Papuansub-haplogroup,C-M130is present at a frequency of 13.5%. Thenetwork topology suggests that C-M130 arrived to theKiribati Archipelago from West Polynesia, specifically from West Samoa, Tonga and/or Tutuila subsequent to the Austronesian expansion about 832-1408 years ago. The haplotype affinities withinO2a2b-P164 argue for anoriginal source in Taiwan and its dispersal to West Polynesia and then to Southeast Micronesia. The present investigation provides an understanding of the genetic composition a...

Concepts
Powered ByUnsilo

West Polynesia
Austronesian Expansion
mtDNA Markers
Archipelago Region
Y-chromosome Markers
Present Investigation
History Of Region
Initial Expansion
Genetic History
Close Affinities

Introducing Weekly Round-ups!Beta

Powered by R DiscoveryR Discovery

Round-ups are the summaries of handpicked papers around trending topics published every week. These would enable you to scan through a collection of papers and decide if the paper is relevant to you before actually investing time into reading it.

Climate change Research Articles published between Jun 13, 2022 to Jun 19, 2022

R DiscoveryJun 20, 2022
R DiscoveryArticles Included:  5

Understanding the effects of the snow ratio on glacier mass balance under variable climatic conditions is crucial for predicting how glaciers will res...

Read More

Good health Research Articles published between Jun 13, 2022 to Jun 19, 2022

R DiscoveryJun 20, 2022
R DiscoveryArticles Included:  5

In West Africa, the various types of diabetes according to WHO or the American Diabetes Association (ADA) are endemic; a particular type referred to a...

Read More

Gender Equality Research Articles published between Jun 13, 2022 to Jun 19, 2022

R DiscoveryJun 20, 2022
R DiscoveryArticles Included:  5

This study aims to evaluate changes in the presence of women on Spanish boards after the Unified Good Governance Code of Listed Companies (2006) and t...

Read More

Coronavirus Pandemic

You can also read COVID related content on R COVID-19

R ProductsCOVID-19

ONE PROBLEM . ONE PURPOSE . ONE PLACE

Creating the world’s largest AI-driven & human-curated collection of research, news, expert recommendations and educational resources on COVID-19

COVID-19 Dashboard