Help:DNA Features

Categories: DNA | WikiTree Help | DNA Project

Have you taken a DNA test for genealogy? WikiTree's DNA features:

  1. Help you get more out of the tests for your own genealogy.
  2. Help our shared mission to connect the human family on one free, genealogically-correct tree.

Although some of the features described below are for advanced genetic genealogists, don't be intimidated! All you have to do to get started is select the test you have taken here. Many of the benefits will then happen automatically.

For users' perspectives on these features, you might want to see Peter Roberts' "WikiTree and DNA" post on Roberta Estes' DNAeXplained blog and Kitty Cooper's "Organizing DNA results with your Genealogy."

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Contents

Recording DNA-Confirmed Relationships

Parent-child relationships on WikiTree can be marked as "Confirmed with DNA." Our dream is to confirm them all!

Look for indicators like this in trees and the Relationship Finder: DNA-confirmed.gif

See Confirmed with DNA for instructions.

Recording Tests

WikiTree doesn't need your test results. We just need to know which test you have taken. Select from the list here.

You will get the DNA Tested badge and the fact that you've taken the test will be linked from your profile.

A special test details page will be created within 24 hours. Test detail pages for Y-chromosome and mitochondrial DNA tests show the earliest-known direct-line paternal or maternal ancestor. They also show the living people who share the same Y-chromosome or mitochondrial DNA, link to DNA Ancestors and DNA Descendants views for each individual, and include direct Relationship Finder links to show the relationship between the test-taker and the listed person.

Examples:

These test detail pages are rebuilt every day. They are updated as new discoveries are made by you or others, as privacy preferences change, etc.

DNA Test Connections on Relevant Profiles

When you record that you've taken a test we automatically connect this fact to profiles on WikiTree where your test may be useful for confirming or rejecting relationships. This encourages others — including distant cousins who find the profiles through Google searches — to compare results or get tested.

  • Y-Chromosome DNA Tests: If a male on WikiTree has taken a Y-chromosome DNA test we go all the way up the direct paternal line, father-to-father, to find the test-taker's earliest-known paternal grandfather. Then, starting with this earliest-known paternal grandfather, we go down all the direct male lines, not just the test-taker's own line. The system includes all sons and skips all daughters and profiles without a specified gender.
  • Mitochondrial DNA Tests: If a male or female on WikiTree has taken a mitochondrial DNA test we will go up the direct maternal line, mother-to-mother, to find the test-takers's earliest-known maternal grandmother. We then include all the children, male and female, of this earliest-known direct-line maternal grandmother. Then we take the daughters gathered in the previous step and add all her children, male and female. We repeat this down through all the generations. In every generation, all children are included, but only the children of daughters are included in the next generation. This is the same as what you see on the earliest-known maternal grandmother's DNA Descendants page in the mitochondrial section.

All you have to do is say that you have taken the test. WikiTree does the rest.

Test connections include paternal or maternal haplogroups[1] along with YSearch, MitoSearch or GEDMatch IDs and other useful information.

Example: Thomas Roberts (1816-1892)

Note that connections are made automatically but not instantly. It may take up to 24 hours for new tests and updates when family relationships are changed.

DNA Test Connections for Surnames

We create an index for everyone who shares a given last name at birth and is connected to any DNA test on WikiTree.

Example: Smith DNA Connections

These are most directly helpful for Y-chromosome tests. You can limit the display to just yDNA.

Surname project administrators can use these as recruiting tools. If someone has taken a mitochondrial or autosomal test but has the surname in their family, they may well be interested in participating or finding someone in their family who can take a Y-chromosome test.

To access all the DNA Surname Connections pages for the eight surnames of your great-grandparents, click the Surnames link in your "My WikiTree" pull-down menu.

Illustrations of DNA Inheritance (DNA Ancestors Pages)

Every person on WikiTree has a DNA Ancestors page that you can see if their tree is public or if you're on the Trusted List. They are accessible through the person's Tree & Tools page or from the DNA link on the pull-down menu for the person.

These pages show the ancestors from whom a person has inherited their mitochondrial DNA and their Y chromosome, if they're male. It also shows the percentage, on average, of a person's X-chromosome inherited from specific ancestors.[2]

Examples:

If you're an experienced genetic genealogist, you know the pattern of Y-chromosome and mitochondrial DNA inheritance. But the visualization can be helpful for newbies.

The pattern of X-chromosome inheritance can be a little confusing for anyone!

WikiTree's charts don't just show you the positions of ancestors on a generic tree, like you can find elsewhere. These pages show you the actual ancestors' names and connect to everything that is known about the ancestors.

DNA Inheritance Widgets for Bloggers and Webmasters

WikiTree has special "widgets" that can be embedded in any blog or website. They parallel the DNA Ancestors views. Since they pull data directly from WikiTree they always reflect the most current information and privacy preferences, and you don't need to worry about keeping an old blog post or web page current.

Examples:

The widgets can be accessed through the Family Tree and Tools link on the pull-down menu for any person with a public family tree, then WikiTree Tools and Tree Widgets.

Lists of Potential Test-Takers (DNA Descendants Pages)

Every person on WikiTree also has a DNA Descendants page. These are accessible through the Tree & Tools page or from the DNA page on the pull-down menu for the person.

Examples:

These display the descendants who have inherited an ancestor's Y-chromosome, mitochondrial DNA, and X chromosome. They can be handy when you're trying to find a living descendant who could be tested to confirm or reject the validity of a relationship.

Privacy-Controlled Trees and Lists to Share with DNA Matches

WikiTree is perfect for sharing and collaborating with DNA test matches.

First, your genealogy here is already available to everyone on the Internet for free, with privacy controls. So it's easy to show your matches your tree and ask if they recognize any names or locations.

Second, everything on WikiTree is centered on genealogy collaboration. It's what we do here.

See DNA Matches for more.

Enhanced Relationship Finder for Matches including Triangulation

If your match is already using WikiTree, you don't need to manually compare genealogies. Finding your relationship might just be one click away.

The Relationship Finder (example) is a powerful tool for discovering common ancestors. Links to this feature are available through icons relationship.gif that appear on test details pages and elsewhere.

Experienced genetic genealogists learn that a shared segment of autosomal DNA may not come from your most recent common ancestor. It may have come from one or more other ancestors you share in common. For this reason, WikiTree's Relationship Finder enables you to explore all your common ancestors.

If you share a segment of autosomal DNA with two or more other people who also match each other on that segment, you can "triangulate." If the Relationship Finder finds more than one common ancestor for two people, you can filter the common ancestors by adding a third, fourth, or even fifth person.

See Relationship Finder for Genetic Genealogy for more information.

DNA Ancestor Confirmation Aid

The holy grail for our community is to scientifically confirm each and every parent-child relationship on WikiTree. It is our mission to connect the world on one accurate family tree.

Even confirming relatively recent ancestors is not practical for most people right now, but to help move toward that goal we have DNA Ancestor Confirmation Aids.

To access yours, click the DNA Confirmation link in your "My WikiTree" pull-down menu.

Example: DNA Ancestor Confirmation Aid for Peter Roberts

See DNA Ancestor Confirmation Aid and Confirmed with DNA for more information.

DNA Categorization for Projects

On WikiTree there is a relatively simple way to accomplish a very important task for surname DNA projects and geographic DNA projects. Many project admins have matching direct lines with unidentified shared ancestors. Now we can connect those ancestors and all known information in one place.

Examples:

See DNA Categorization for Projects for more information.

Q&A and Community

This is a rapidly-evolving area. Almost all genealogists are at different levels when it comes to understanding and applying DNA testing. That's intimidating. And exciting.

Anytime you have a question, at whatever level, ask it in G2G and use the tag "dna".

If you have quick advice, thoughts, or discoveries to share, we have a DNA and Wiki Genealogy community on Google+.

If you want to help push the envelope on the practical application of DNA for growing a single worldwide family tree — which we are committed to doing here at WikiTree — join our DNA Project.



  1. In the future, we hope to automatically alert members when haplogroups that should match conflict. Automatic detection of haplogroup conflict will be difficult for the foreseeable future because of the inconsistent naming of haplogroups and changing of haplogroup labels through time. This would require more technical sophistication in the programs and/or users. In the meantime, if a haplotype comparison chart exists on the Web then it can be linked from the note field. For example, Peter Roberts' Family Tree DNA yDNA test page links to Haplotype comparison of Roberts descendants.
  2. For an individual the actual percentage of DNA inheritance from specific ancestors (beyond a parent or grandparent) is rarely close to the average.


This page was last modified 15:07, 23 May 2017. This page has been accessed 62 times.