Showing posts with label chromosome browser. Show all posts
Showing posts with label chromosome browser. Show all posts

Saturday, 3 March 2018

DNA on steroids!

MyHeritage have come good on two more of their promises.
I'm hedging my bets about how many promises they may have made, but these two are important to me :)
(See also further improvements in later post above: http://dnasurnames.blogspot.com/2018/03/can-you-get-double-doses-of-steroids.html)

1) Chromosome browser comparisons between up to 8 kits - WITH triangulated segments identified.

Have only had a chance for a brief play to date, and like several others on assorted lists, fell into the first trap.
Why aren't the triangulations showing?
Well they do, but only if all those in the selected list triangulate, so you have to add/subtract people for the list.
Which is a bit hit or miss without more knowledge or prior downloads of the one to one comparisons introduced back in January - and where promise number 2 comes in for less miss and more hit.
OR, opening another tab with the shared match list open :)

Here's a picture of a "hit" - I'm the grey background comparing with three of my Henderson/Wight or Henderson/Millar paternal side 2nd and 3rd cousins:
Note chromosome 7 with it's border around the triangulated segments.
Click inside the border and get the popup with details.


2) Ability to download all your match and segment data.
I cannot report on what that looks like as yet, having whizzed through all my kits requesting the downloads, and been promised an email when they were ready -nothing has yet arrived, some hours later *. Suspect they'll be a bit snowed under with that one.
* update from MyHeritage, all sent so the hold up appears to be the mail system somewhere, and no, they aren't in my spam folder.

Without such an ability I strongly suspect I've been missing out on noticing interesting new matches as unlike Ancestry you cannot quickly see which kits are new and have not yet been checked.
With Ancestry you can filter by just your new matches sorted by order of relationship, ie the most interesting float to the top. There's also a sort option by date - which is less useful in general. I tend to use that only to re-find the matches I've starred recently on Ancestry.
With FamilyTreeDNA's much more compact match list display than MyHeritage the "by match date" sort there is easy to quickly scan down for the larger new matches.

Here's the announcement received from MyHeritage including the links to their blog to explain the new features:
===
We are excited to announce a major upgrade to the Chromosome Browser on MyHeritage. With this upgrade, we’ve upped our genetic genealogy game considerably to help people better understand how they are related to their DNA Matches. Together with family tree details like shared ancestral surnames and shared Smart Matches, users may be able to trace back the common ancestors who passed down shared DNA segments to them and their DNA Matches, and reconstruct the exact relationship path between themselves and DNA Matches that they find intriguing.
The initial version of the MyHeritage Chromosome Browser, released in January 2018, was a one-to-one chromosome browser. It displays DNA segments shared by you with one DNA Match.
The new One-to-Many Chromosome Browser, with its support for indicating triangulated segments, is an exciting addition to MyHeritage’s growing arsenal of useful tools for genetic genealogy. The tool is completely free.

Also new is the ability to export the list of DNA Matches, along with several other export capabilities.
Best regrads,
Daniel Horowitz
Genealogy Expert



Friday, 12 January 2018

Kudos to MyHeritage

The MyHeritage Year in Review blog post of 26 Dec 2017 contained this statement:

You can count on MyHeritage DNA to continue to grow rapidly and improve in accuracy and features. We are working on a major revamp of the matching algorithms which will correct old problems, add a preliminary Chromosome Browser and put accuracy at an unprecedented high level, and this will be released in early January 2018.  

It is now 11 January 2018 and they have already come good on the promise to revamp the matching algorithms (but not as far as I can see, a Chromosome Browser - but see update below).

The problems I reported earlier, my own 2nd cousin not appearing in my matches, and the predicted 2nd cousin on Ancestry and FamilyTreeDNA that was missing on MyHeritage are both now fixed.
As has one I'd not reported to them and only discovered this afternoon - a match that wasn't real but showed as reasonably strong, (45cMs approximately, 5 segments) now shows as "not related", as suspected.
Also fixed, a predicted relationship of father/daughter now rather more accurately showing as siblings!

Support was on the ball too, sent me a message advising me the update had happened, and asking for my report on whether or not my issues had been solved.
Yes.

Update:
Within a hour or so of my posting the above the promised chromosome browser was also there, with an ability to download the segment details for that individual match.
Along with a message from MyHeritage pointing me to their blog post about the improvements:
https://blog.myheritage.com/2018/01/major-updates-and-improvements-to-myheritage-dna-matching/

The match lists have grown immensely to be far more in line with those from other companies, instead of rather sparse and suspect before the upgrade.

As I've popped in our local Genie society newsletter for our DNA group news:
MyHeritage is definitely now a major player in the genetic genealogy stakes, and should deserve more consideration than Ancestry given the Chromosome Browser.

My preferred strategy should I be starting out again now would be to:
Test FamilyFinder at FamilyTreeDNA (FTDNA) to get a sample on file there available for the more specialised tests FTDNA also offer that the other companies do not - and provide hassle free communication with matches.
Then transfer that FamilyFinder file to MyHeritage to fish in that pond too - as well as GEDMatch of course.

If you've already tested at MyHeritage, that test can be transferred to FTDNA for free
https://www.familytreedna.com/landing/atdna-landing.aspx

Read Roberta Estes' post on Ancestry/FTDNA transfers before making up your mind about transferring an Ancestry test to FTDNA (they can't go the other way):
https://dna-explained.com/2017/12/04/testing-strategy-should-i-test-at-ancestry-and-transfer-to-family-tree-dna/

Don't forget GEDmatch - that cousin you've been looking for could be on any of the sites, so you should be on as many as you can too.



Friday, 22 August 2014

Ancestry DNA - lack of chromosome browser

Please support this petition to get ancestry to provide a chromosome browser with their autosomal dna tests:
http://www.change.org/petitions/ancestry-com-dna-llc-give-ancestrydna-customers-dna-segment-data-a-chromosome-browser-now
Without the specifics of how well, where (which chromosome) our matches match us, and who else matches them, the money spent on a dna test on ancestry is just an expensive way to find hints to others' trees with no evidence whatsoever.
We shouldn't have to rely on (excellent) third party tools such as those at GEDMatch to get access to the useful parts of what we've paid for.