Saturday, March 14, 2020

My atDNA matches as of 14 March 2020:

Company Matches
AncestryDNA 168,618
MyHeritage 118,821
FTDNA 8,597
23andme v2 2,674
23andMe v3 2,491
LivingDNA 10

Tuesday, January 07, 2020

My Heritage 2019 event review

Several of the genetic DNA companies are posting reviews of their activities in 2019. Here is one for MyHeritage:

Wrapping Up a Fantastic-2019

MyHeritage is one of the companies I use for my own DNA research. It is the only site where I find information on my Spanish relatives. I encourage anyone with European ancestors to the USA within the past 150 years to test there as well as with the other companies.

Tuesday, December 24, 2019

DNA test discounts are ending starting today!

If you want to order a genealogy or health DNA test you should look at the main test sites today.


For the health tests, some USA states and other countries are excluded. Check the web sites if interested.

Ancestry has sites in the UK, Australia, and Canada, as well as the USA.

Friday, August 02, 2019

The Genetic History of France

The Genetic History of France

Aude SAINT PIERRE, Joanna Giemza, Mathilde Karakachoff, Isabel Alves, Philippe Amouyel, Jean-Francois Dartigues, Christophe Tzourio, Martial Monteil, Pilar Galan, Serge Hercberg, Richard Redon, Emmanuelle Genin, Christian Dina



doi: https://doi.org/10.1101/712497


Full paper and supplementary info at

https://www.biorxiv.org/content/10.1101/712497v2

This article is a preprint and has not been peer-reviewed


Abstract

The study of the genetic structure of different countries within Europe has provided significant insights into their demographic history and their actual stratification. Although France occupies a particular location at the end of the European peninsula and at the crossroads of migration routes, few population genetic studies have been conducted so far with genome-wide data. In this study, we analyzed SNP-chip genetic data from 2184 individuals born in France who were enrolled in two independent population cohorts.

Using FineStructure, six different genetic clusters of individuals were found that were very consistent between the two cohorts. These clusters match extremely well the geography and overlap with historical and linguistic divisions of France. By modeling the relationship between genetics and geography using EEMS software, we were able to detect gene flow barriers that are similar in the two cohorts and corresponds to major French rivers or mountains. Estimations of effective population sizes using IBDNe program also revealed very similar patterns in both cohorts with a rapid increase of effective population sizes over the last 150 generations similar to what was observed in other European countries. A marked bottleneck is also consistently seen in the two datasets starting in the fourteenth century when the Black Death raged in Europe.

In conclusion, by performing the first exhaustive study of the genetic structure of France, we fill a gap in the genetic studies in Europe that would be useful to medical geneticists but also historians and archeologists.

Saturday, June 15, 2019

Father's Day Sale Prices for Autosomal DNA tests

These prices are good to 17 June 2019:


In addition FTDNA has sales on Y DNA and mtDNA tests.



Sunday, May 05, 2019

Mother's Day autosomal DNA test prices:

Mother's Day autosomal test prices:




23andme. $99. Also a $30 discount on the Health & Ancestry package.

Ancestry. $59. Offer ends May 13.

Family Tree DNA. $79.

Living DNA, $79.

MyHeritage. $69. Sales ends May 13.

Irish DNA Atlas

The Irish DNA Atlas has been published to present the results of a study on DNA in Ireland.

From Nature:

Article | OPEN | Published: 08 December 2017

The Irish DNA Atlas: Revealing Fine-Scale Population Structure and History within Ireland

Edmund Gilbert, Seamus O’Reilly, Michael Merrigan, Darren McGettigan, Anne M. Molloy, Lawrence C. Brody, Walter Bodmer, Katarzyna Hutnik, Sean Ennis, Daniel J. Lawson, James F. Wilson & Gianpiero L. Cavalleri

Scientific Reports volume 7, Article number: 17199 (2017) | Download Citation


An Author Correction to this article was published on 03 May 2018

This article has been updated



Abstract

The extent of population structure within Ireland is largely unknown, as is the impact of historical migrations. Here we illustrate fine-scale genetic structure across Ireland that follows geographic boundaries and present evidence of admixture events into Ireland. Utilising the ‘Irish DNA Atlas’, a cohort (n = 194) of Irish individuals with four generations of ancestry linked to specific regions in Ireland, in combination with 2,039 individuals from the Peoples of the British Isles dataset, we show that the Irish population can be divided in 10 distinct geographically stratified genetic clusters; seven of ‘Gaelic’ Irish ancestry, and three of shared Irish-British ancestry. In addition we observe a major genetic barrier to the north of Ireland in Ulster. Using a reference of 6,760 European individuals and two ancient Irish genomes, we demonstrate high levels of North-West French-like and West Norwegian-like ancestry within Ireland. We show that that our ‘Gaelic’ Irish clusters present homogenous levels of ancient Irish ancestries. We additionally detect admixture events that provide evidence of Norse-Viking gene flow into Ireland, and reflect the Ulster Plantations. Our work informs both on Irish history, as well as the study of Mendelian and complex disease genetics involving populations of Irish ancestry.

See the article for discussion and maps.

Also, see, People of the British Isles: preliminary analysis of genotypes and surnames in a UK-control population

April 2019 update from Living DNA

Living DNA is a DNA ancestry service from England. Originally it specialized in providing a geographic breakdown of your DNA to locations in England, Wales, Scotland, and Northern Ireland. It has added Eire and is going to be adding Germany to its reports. A news update is available at this link,

https://livingdna.com/news/living-dna-april-2019-product-update