Ancestry DNA new feature SideView splits ethnicity by parent + ethnicity update

[melba_schmelba]

As well as the new feature below, released yesterday, Ancestry DNA ethnicity estimates have been updated with some quite significant changes. Looking at my own kits, the new feature seems quite reliable from what I know of the genealogical ancestry .

https://www.ancestry.com/corporate/newsroom/press-releases/ancestry-introduces-sideview-first-its-kind-technology-gives-individuals
"SideView™ unlocks new insights by identifying DNA inheritance by parent

LEHI, Utah and SAN FRANCISCO -- April 13, 2022 – Ancestry®, the global leader in family history and consumer genomics, today unveiled SideView™ technology, a first-of-its-kind scientific innovation that separates DNA into parental sides giving AncestryDNA® customers new insights into which side of the family they inherited their genetics from. With more than 20 million people in its growing consumer DNA network, Ancestry is the first company to be able to provide this type of genomic information without requiring a parent to be tested.

Phasing or understanding genetic inheritance without having genetic samples of an individual’s parents is a problem that scientists have been trying to solve for decades. Now with SideView™ technology, Ancestry can phase a customer’s entire genome into parental sides using the DNA they share with relatives in the AncestryDNA database - their DNA matches - to provide an even greater level of detail for genomic discoveries. Grouping of matches is the first critical step in phasing DNA using SideView™ technology. SideView™ technology groups matches with a precision rate of 95% for 90% of AncestryDNA customers thanks to the size and statistical power of the AncestryDNA match network."


https://www.theverge.com/2022/4/13/23021782/ancestry-dna-sort-genes-parents-ethnicity
"Separating out which parts of someone’s genome came from which parent has been a challenge for researchers, says Barry Starr, the director of scientific communications at Ancestry. “It’s a really big breakthrough for science in general,” he told The Verge. “That’s really something that no one else has been able to do without having a parent tested as well.” The feature will be automatically available for all users."

more diagrams on the Ancestry FAQ
https://support.ancestry.co.uk/s/article/SideView-Technology

[Gadget]

I've been playing with them since I discovered them yesterday.

They seem to be fairly accurate for the ones that I've looked at - surprise, surprise.

 

PS - also I see that in the old one my Norwegian 2% has returned!

[Gadget]

It might be very useful for those who want to trace and unknown parent/grandparent/ etc.

[melba_schmelba]

I've been playing with them since I discovered them yesterday.

They seem to be fairly accurate for the ones that I've looked at - surprise, surprise.

 

PS - also I see that in the old one my Norwegian 2% has returned!

Scandinavian on my kits (Norway and Sweden & Denmark) seems to have gone up again quite a bit, after going down, ditto for my Irish percentages. Also the Scottish which previously shot up on the 2021 update, has gone way down to probably something more accurately representing known ancestry. Still not good in detecting French ancestry though, but we know the reasons for that (Ancestry not being allowed to market DNA tests in France & difficulty in getting reliable French reference samples).

[melba_schmelba]

It might be very useful for those who want to trace and unknown parent/grandparent/ etc.

Yes, I was thinking that, for us who know most of our genealogy (or think we do ), the ability to separate ethnicity by parent is just an interesting curiosity, but for someone who was adopted, or as you say has an unknown father, it might be really useful in trying to solve the puzzle .

[glamwales]

Ive lost 7% Norwegian completely and gone from 12% to 5% irish. Scottish increases by 2% and not one known scottish person in my tree

On the whole im not impressed at mo personally

[melba_schmelba]

Ive lost 7% Norwegian completely and gone from 12% to 5% irish. Scottish increases by 2% and not one known scottish person in my tree

On the whole im not impressed at mo personally

What is your Wales %? Does it reflect your known ancestry accurately?

[Ashtone]

Not sure what to make of the SideView results in my friend's AncestryDNA. We're quite certain "Parent 2" is her father, based on the overall data prior to SideView.

However SideView displays Ireland 0% for Parent 2 - which is incorrect. My friend's paternal 3 x great-grandmother was from Belfast, Ireland. So Parent 2 should have a small percentage of Irish DNA.

Interestingly SideView displays Ireland 2% for Parent 1 (presumably my friend's mother).
My friend's thorough research on both parents has yet to reveal any maternal Irish DNA. So now we are confused with the SideView results. 

[Gadget]

Ive lost 7% Norwegian completely and gone from 12% to 5% irish. Scottish increases by 2% and not one known scottish person in my tree

On the whole im not impressed at mo personally

It depends on the DNA that you share with your matches in the database and will be subject to error. If you look closer, you'll see that the percentage given is a range not and absolute percentage.

e.g from my current estimate:

 Irish
Your ethnicity estimate is 1%

Your range of 0-13% comes from making multiple comparisons of your DNA to our reference panel. It includes other possible, but less likely, percentages. -  0-13%

Ancestry can phase a customer’s entire genome into parental sides using the DNA they share with relatives in the AncestryDNA database