Irish dna

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Joined: Fri Mar 16, 2012 5:43 pm

PostPosted: Sun Apr 08, 2018 12:14 pm ... 6-Feb2018/

"Speaking on RTÉ Radio One’s Morning Ireland, professor of population genetics at Trinity College Dublin, Dan Bradley said that a project with the National Museum of Ireland has made similar findings for that of the earliest Irish populations.

The researchers working on the Irish project have compiled data from two individuals from over 6,000 years ago that provide similar results as Cheddar Man.

“The earliest Irish would have been the same as Cheddar Man and would have had darker skin than we have today,” Bradley said.

He said their findings suggest the DNA is linked to individuals from Spain and Luxembourg, people who populated western European after the last Ice Age but before the farming era."

We think [the Irish examples] would be similar. The current, very light skin we have in Ireland now is at the endpoint of thousands of years of surviving in a climate where there’s very little sun,” Bradley said.

“It’s an adaptation to the need to synthesise vitamin D in skin. It has taken thousands of years for it to become like it is today.”

Bradley’s research suggests that there were about 30-40,000 people on the island of Ireland at the time that the dark skin genomes date back to.

“They came here very probably by boat. They ate a lot of fish, hunted wild boar, gathered plants and nuts,” he said.

Bradley said that the team of scientists at Trinity College Dublin hope to have their research fully completed within the year."

Posts: 2277
Joined: Fri Mar 16, 2012 5:43 pm

PostPosted: Thu Oct 11, 2018 7:16 am
Interdisciplinary Research on the Origins of the Irish People: Launch of TCD’s Centre for New Irish Studies.

"On Tuesday 9th October 2018, 5pm, the Trinity Centre for New Irish Studies (CNIS) will be launched with the event Interdisciplinary Research on the Origins of the Irish People. A panel discussion will comprise talks from Professor Jim Mallory (Queen’s University Belfast), Professor Dan Bradley (Trinity College Dublin), Dr Rowan McLaughlin (Queen’s University Belfast) and Dr Lara Cassidy (Trinity College Dublin). The leading researchers will discuss their interdisciplinary approach to examining the Irish people and their origins, as well as a more general discussion about Irish Studies and interdisciplinarity.

Great presentations by all four of the above speakers.
Lara discussed the initial findings of her research:
The main focus of this project was the sequencing of ancient human genomes from all periods of Ireland's prehistory to study the island's past demography. The first publication of this work (Cassidy et al. 2016) presented a new demographic scaffold for the island, proposing that at least three ancestrally distinct Irish populations have existed on the island, whose inhabitation corresponds closely to the Mesolithic, Neolithic and Chalcolithic/Early Bronze Age eras, with strong continuity observed from the Bronze Age onwards. Lara completed her PhD last year and is now continuing on with this same project as a postdoctoral researcher in the Bradley lab.

1) An Ancient Irish Genomic Dataset: Over 100 Ancient genomes sequenced.
2) These can be partitioned into three distinct populations using descriptive statistics (PCA and Admixture)
3) Discussed Mesolithic, Neolithic, Chalcolitic, Bronze Age, Iron Age, Modern
4) Mesolithic formed in three southern refugee, Iberia, Italy, Caucasus
5) Neolithic from Anatolia via Megalithic Atlantic movement
6) Bronze Age from Steppes with massive population replacement
7) in Ireland there is a clear North East / South West Cline in the “Teal” CHG Steppe component
8) There is uneven distribution of Steppe Ancestry in British and Irish Copper/Bronze Age
9) Continuity in Irish Atlantic Genome since Bronze Age
9) Genes mirror geography in modern Britain and Ireland, S.Munster, N.Munster, Leinster, Connacht, Ulster
10) Discussion on emergence of Proto Celtic Language
11) How do our Irish Bronze Age and Iron Age populations relate to modern Irish populations
12) West to East, Irish Iron Age, Irish Bronze Age, British Iron Age, Anglo Saxon

Dr Ronan McLaughlin work has focussed on prehistoric Europe, and Irish populations from all times from the Stone Age until recent centuries.
2,000+ excavated sites documented in archealogy database with many due to recent construction of motorway network.
Uses Big Data and Analytics techniques.
Population crash observed in Ireland and throughout Europe at end of Bronze Age.
Discussion of reasons for three boom/bust cycles through Mesolithic, Neolithic, Bronze ages.
Discussion on use of cremation and inhumations in burial practice through Neolithic, Bronze Age, Iron Age, Early Christian"

“This paper synthesizes and discusses the spatial and temporal patterns of archaeological sites in Ireland, spanning the Neolithic period and the Bronze Age transition (4300–1900 cal BC), in order to explore the timing and implications of the main changes that occurred in the archaeological record of that period. Large amounts of new data are sourced from unpublished developer-led excavations and combined with national archives, published excavations and online databases.”

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