An exciting triangulation feature is available at 23andme. This feature shows you the relatives you have in common with one other profile and whether or not they triangulate with the two of you.
To use this tool you go to Family & Friends > DNA relatives and pick a DNA relative to look at. Scroll down the page towards the bottom where you will see a display like this (names removed for privacy): [previous 2 paragraphs updated 10 May 2019]
When there is a “Yes” in the right hand column, there is a DNA segment in common between the two people you are comparing and this third person thus you triangulate. A “No” means that although you each share DNA with this relative, there is no segment of DNA where all three of you match. Click on the Yes (or a No) to see the three of you compared in the chromosome browser.
Once in the chromosome browser, you can use the “Update View – Edit” to add more people to the comparison with the first person. This is the same chromosome browser that you get to from Tools > DNA relatives > DNA
Jason Lee has done a nice write up with more details on his DNA blog at Tumblr:
The Southern California Genealogical Society puts on a wonderful genealogy conference every year in Burbank in early June. There are only a few days left to register so, unless you have done so already, head over to http://genealogyjamboree.com/2016/about.html by May 22.
Thursday June 2 is DNA day and there are many terrific presenters and topics: Tim Janzten, Blaine Bettinger, Diahan Southard, Emily D. Aulicino, Katherine Borges, Jim Bartlett, David Dowell, Paul Woodbury and me to name a few. I will be giving my updated talk on DNA Triangulation as well as my Breaking Brick Walls talk. The full schedule is at http://genealogyjamboree.com/2016/schedule-dna.html
Friday morning there are a number of FREE events, including round tables led by experienced researchers both for DNA and genealogy. I will be hosting a DNA table about Triangulation.
The rest of the conference has numerous genealogy talks and a few more DNA presentations plus an exhibit hall of vendors (always one of my favorite parts). Since this is the year I plan to master German genealogy I was pleased to see that it is one of this year’s themes.
A particularly good feature is that you can sign up for a one-to-one consultation with an experienced researcher to help you with one of your genealogical problems, described towards the bottom of this page: http://genealogyjamboree.com/2016/special-events.html
Hope to see you at Jamboree!