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“Pruning” to Find Shared Ancestors in Private Trees

April 5, 2017 thednageek 50d Comments

If you have taken the AncestryDNA test and “attached” a family tree to your results, Ancestry’s computers will search the trees…

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Posted in: Making Sense of DNA Filed under: adoptees, AncestryDNA, private trees, Shared Ancestor Hints, unknown parentage

Genetic Communities Are Here!

March 27, 2017 thednageek 131d Comments

On March 28, 2017, AncestryDNA rolled out a novel and exciting feature called Genetic Communities — GCs for short — as…

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Posted in: Ethnicity Estimates, Making Sense of DNA Filed under: AncestryDNA, Genetic Communities, history

A Genetic Genealogy Glossary

March 21, 2017 thednageek 7d Comments

This glossary is a work in progress. Feel free to suggest additions or corrections. A admixture — interbreeding between two…

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Posted in: Lagniappe Filed under: basics, definition, DNA, education

Cystic Fibrosis: A Case Study in Genetic Privacy

March 20, 2017 thednageek 9d Comments

This post has been updated. Blaine Bettinger recently wrote a post entitled “Are You Doing Everything to Identify Your Matches?”…

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Posted in: Lagniappe Filed under: 23andMe, cystic fibrosis, Family Tree DNA, GEDmatch, genetic privacy, Genome Mate Pro, medical traits

Genetic Privacy and H.R. 1313

March 12, 2017 thednageek 10d Comments

Judy Russell, The Legal Genealogist, just published an important blog post titled “A genetic privacy gamechanger?”.  It is about H.R.…

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Posted in: Lagniappe Filed under: autosomal DNA, Genetic Information Nondiscrimination Act, genetic privacy, health insurance, House Resolution 1313 (HR1313)

The Science Behind Genetic Communities at AncestryDNA

March 3, 2017 thednageek 13d Comments

Last month, scientists from AncestryDNA published a research paper in the journal Nature Communications that describes the science underlying the forthcoming…

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Posted in: Ethnicity Estimates, Making Sense of DNA Filed under: Acadians & Cajuns, AncestryDNA, Genetic Communities, scientific papers

Upcoming Changes to Kit Registration at AncestryDNA: Keep Calm and Carry On

February 24, 2017 thednageek 103d Comments

Some AncestryDNA users who have tried to register a new kit in the past couple of days are getting this…

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Posted in: DNA Testing Filed under: AncestryDNA, genetic privacy, informed consent

Using Species Discovery Curves to Estimate the Size of a Genetic Genealogy Database

February 10, 2017 thednageek 4d Comments

The size of the autosomal database at a DNA testing company is an important consideration when deciding where to test.…

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Posted in: DNA Testing Filed under: database size, GEDmatch

Meiosis, Schmeiosis

January 27, 2017 thednageek 2d Comments

In an earlier post, I mentioned in passing that AncestryDNA’s Match White Paper (31 March 2016) misused the word meioses…

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Posted in: Making Sense of DNA Filed under: avuncular, crossing over, meiosis, relationship prediction

My 2017 Wish List

January 11, 2017 thednageek 14d Comments

My personal wish list for genetic genealogy in 2017 involves realistic, optimistic, and moon-shot goals. For example, I have identified…

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Posted in: DNA Testing Filed under: 23andMe, AncestryDNA, Family Tree DNA, wish list

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