Last week I published “Small Matching Segments – Friend or Foe?” to join in the community’s conversation about the use of “small” segments of DNA, referring to segments 5 cM and smaller (although keep in mind that the term “small,” without a more specific definition, will mean different things to different people).
The question that the community has been struggling with is whether small segments of DNA can be used as genealogical evidence, and if so, how they can be used.
As I wrote in my post, a significant percentage of small segments are false positives, with the number at least 33% and likely much higher. In my examination and in the Durand paper I discuss, a false positive is defined as a small segment that is not shared between a child and at least one of the parents.
There has been a great deal of conversation in the genetic genealogy community over the past couple of weeks about the use of “small” segments of matching DNA. Typically, the term “small” refers to segments of 5 cM and smaller, although some people include segments of 7 cM or even 10 cM and smaller in the definition.
The question, essentially, is whether small segments of DNA can be used as genealogical evidence, and if so, how they can be used.
While it may seem at first that all shared segments of DNA could constitute genealogical evidence, unfortunately some small segments are IBS, creating “false positive” matches for reasons other than recent ancestry. These segments sometimes match because of lack of phasing, phasing errors, or a variety of other reasons. One thing, however, is clear: there is no debate in the genetic genealogy community that many small segments are false positive matches. There IS debate, however, regarding the rate of false positive matches, and what that means for the use of small segments as genealogical evidence.
I am incredibly honored to announce my election to the Board of Trustees of the New York Genealogical & Biographical Society! The NYG&B is the largest and oldest genealogical society in New York State, and the second oldest genealogical society in the nation. As a lifelong genealogist with New York roots dating back almost 250 years, joining the NYG&B is a dream come true for me.
Over the past decade, DNA has become a powerful tool for genealogical research. As a member of the NYG&B’s Board of Trustees, I hope to be able to help bridge the (ever-closing) gap between traditional genealogy and genetic genealogy, and help both members and non-members understand and incorporate DNA into their family histories.
The board represents an incredible group of people dedicated to helping people discovery their family histories, and I am so grateful to be able to join them. The full list is below.
The latest announcement by the newly founded Virtual Institute of Genealogical Research (VIGR) is bound to excite genealogists looking to further their knowledge, as well as those with with limited time or resources to attend courses in person.
VIGR will offer courses on a comprehensive list of genealogical subjects, giving genealogists access to a great curriculum year-round through the VIGR virtual platform. I’m proud to announce that I will be a speaker for the VIGR, and I look forward to interacting with the online genealogical community though my course on autosomal DNA. I am honored to be listed among the incredible speakers below.
No fewer than nine upcoming courses are already listed on the VIGR official website, the earliest commencing in November this year. Each will consist of a total of four 90-minute lectures, presented two each on consecutive Saturdays. Each course will also have extensive syllabus material and practical exercises, as well as time for Q&A. The institute intends to keep class sizes small, which allows for more interaction with instructors and a greater depth of instruction as compared to more typical genealogy webinars.
In 2013, genetic genealogist and popular lecturer Maurice Gleeson organized Genetic Genealogy Ireland 2013, the first of its kind conference in Ireland. The event was hugely successful (see all the YouTube videos here), and is back for round two in 2014.
The schedule for Genetic Genealogy Ireland 2014 has just been released (see “DNA Lecture schedule announced“), and features a great lineup of speakers:
- Spencer Wells (Keynote Speaker)
- Maurice Gleeson
- Brad Larkin
- Paul Burns
- Catherine Swift
- Emily Aulicino
- Debbie Kennett
- Richard M Byrne
- Cynthia Wells
- Kirsten Bos
- Katherine Borges
- Tyrone Bowes
- Daniel Crouch
- Patrick Guinness
- Rob Warthen
- Michelle Leonard
- Gerard Corcoran
Announcing the launch of the world’s first multimedia how-to website for genetic genealogists!
How-To DNA (www.howtodna.com) is your how-to guide for genetic genealogy! The site will have short instructional how-to videos for beginners, as well as presentations and webcasts for the advanced genealogist. For example, you can already watch these short two-minute videos:
And there will be many, many more how-to videos coming over the next few weeks and months, including:
- How to interpret your DNA test results
- How to use a chromosome browser
- How to use free third-party tools like GEDmatch
- How to do so much more!
How-To DNA will also provide links to the latest videos, podcasts, and other instructional material created by DNA experts. As an example, listen to this terrific podcast with CeCe Moore being interviewed by The Genealogy Guys and get the latest scoop on CeCe’s involvement with Finding Your Roots! And if you weren’t able to attend the SCGS Jamboree, you can listen to Maurice Gleeson’s incredible talk about DNA and Irish Genealogy.
For the very first time, Family Tree University is offering an online course (a four-week, instructor-guided class with material, quizzes, and extra credit homework) directed to genetic genealogy! Announcing Genetic Genealogy 101, taught by yours truly!
This course is designed for the beginner, and will take you through the basics of genetics, mtDNA, Y-DNA, and autosomal DNA (including understanding your results, using third-party tools, etc.). In addition to the materials, quizzes, and homework, there are message boards where you can ask me questions about DNA, about your research, anything related to DNA. And you’ll be able to connect with and learn from your fellow students (all from the comfort of your home)!
The class starts on Monday, June 16th, and every week for four weeks there is a new lesson. If you’re a beginner and really don’t know where to start with incorporating DNA into your genealogical research, or you’ve received your results and aren’t sure how to read them, this class might be a good fit for you.
Earlier this week, I had the opportunity to speak with Michael Leclerc at Mocavo about DNA, our genealogical beginnings, and so much more. Michael recorded our conversation, and it’s now available as this week’s Mocavo Fireside Chat!
If you’re curious about Y-DNA, mtDNA, or autosomal DNA, or have questions about DNA in general, I think you’ll enjoy this Fireside Chat. And be sure to check out the previous chats, it’s a lineup full of great guests!
The DNAGedcom team (lead by Rob Warthen, Diane Harman-Hoog and Karin Corbeil) would like to announce the following new items to the DNAGedcom system.
Product: Jworks – Autosomal Grouping Tool
Developer: Juan “Jay” Pizarro
Release Date: May 12, 2014
Download or Location: http://dnagedcom.com/Auto/JWorks.aspx
What It Does: This Excel based tool sorts and groups your chromosome browser results from FTDNA into overlapping DNA sets and assigns the ICW status within the set. By following the paper “Combining Results from All Tests” , the tool can also be used to organize the output from all three testing services. You must have Excel to use this. A Mac Version is also available.
Directions: Full directions are found on a link with in the product interface on dnagedcom.com
Tomorrow night at 7 PM EST, I will give a live webinar demonstrating some of the basics of DNA testing for ancestry, including many different ways you can use DNA to solve your family mysteries. The cost is $49.99, which includes the hour-long webinar and my presentation slides. This is the second DNA webinar I’ve given for Family Tree University, and the last one was very well received. It is better suited for those who are new to DNA testing or have received their results and are unsure how to apply them.
And if you are unable to attend tomorrow night, you can download the video and slides at any time! I hope to see you there!
From the website:
Using DNA to Solve Family Mysteries
Format: Live Webinar Registration
YOU’LL LOVE THIS IF:
* you want to explore how DNA can enhance your genealogy research you want to understand more about genetic genealogy