DNA Day at the Family History Library

DNA Day!
National DNA Day is Sunday, April 25, 2021. Come celebrate with FamilySearch and the Family History Library on Monday, April 26, 2021. The Library will be sponsoring six DNA related classes. Classes will be taught via Zoom and broadcast live to RootsTech.org. Additional, DNA classes and resources will also be highlighted.

DNA Day at the FHL
Wondering about the hype surrounding DNA? Come learn about DNA, find out if taking a DNA test is right for you, which tests you can take, and how it might help you in your family history.

DNA Basics Learning Center
The DNA Basics Learning Center was one of the sponsored booths at RootsTech Connect 2021. The DNA Basics Learning Center offered the following:

DNA Activities

 * Jelly Genes. See how your DNA is inherited randomly.
 * Genetic Traits Tree. See how some of the genetic traits you inherited are shared (or not shared) with others.

DNA Day Class Resources
''Understanding and using DNA in genealogy research sometimes require additional study. Key steps, process, and additional resources for each class are listed below.''

Why Genealogists Use DNA
Why do genealogist use DNA? Do you want to learn more? You may be curious how DNA can help you with your genealogical research. All by itself your DNA results are not helpful. DNA is helpful when it is compared to others DNA. The theory is that finding someone who shares an exact segment of DNA with you means you share a most recent common ancestor or MRCA. DNA alone won't tell you who the ancestor is but used along with your paper trail you just might be able to discover the answer. There are different types of DNA that help solve different genealogical problems.

•  Helps identify relationships

•  Connect with living relatives

•  Identify unknown parents

•  Helps break down brick walls

•  Connect with origins

Additional Resources

 * DNA Testing. What is it, and how can you benefit from it?
 * For ethics and privacy information visit The Genetic Genealogist

How Genealogists Use DNA
There are currently five DNA testing companies who test both ethnicity and provide match lists: AncestryDNA, FamilyTreeDNA, 23andMe, MyHeritage DNA, and Living DNA. The match lists are essential to using DNA in family history research. A comparison chart is at the right and more information on these companies can be found here.

Autosomal DNA (atDNA)
Autosomal DNA or atDNA testing can help with the following research questions.


 * Adoption and unknown parentage questions
 * Eliminating one of two possible ancestors
 * Finding up to about 3x great-grandparents

Y-DNA
Y-DNA testing can help with the following research questions.


 * An unknown father, grandfather, great-grandfather, etc.
 * Surname projects

Mitochondrial DNA (mtDNA)
Mitochondrial DNA or mtDNA is most useful when used in conjunction with atDNA on the maternal line.

The Clustering Process
After taking a DNA test, most people have thousands of DNA matches. Clustering is the process of grouping DNA matches by the ancestor or ancestral line on which they appear to relate. Creating clusters will allow you to organize your matches and then focus on the matches that will help solve your research goal.

To create a cluster, follow this process


 * 1) Choose a match with a known relationship
 * 2) View shared or in-common-with matches
 * 3) Create a cluster; name the cluster for the common ancestor
 * 4) Add matches shared between you and the known match to that cluster
 * 5) Repeat
 * 6) As you identify the relationship between you and each match, view shared matches and add to the appropriate cluster

Clustering Tools and Resources
As you start clustering your matches, consider how some of the following tools and resources might help:


 * Color Coding: Ancestry DNA lets users assign Matches to groups which are identified by a name a color. Currently, users can create up to 24 different groups. Carefully plan how to use these groups to create clusters. One popular method is to assign a different color to each parent, grandparent, and great grandparent. As matches are identified as belonging to these ancestors (either by determining a relationship or through shared or in-common-with), they are added to the groups. Learn more about color coding here and here.
 * AutoClusters: Some websites will build clusters for you. AutoClusters are available from MyHeritage, Genetic Affairs, GEDMatch, and DNAGedcom. Note that AutoClustering is usually a Tier 1 or subscription service.
 * Leeds Method: The Leeds Method is a method for clustering your matches by which grandparent you are related to. Learn more about the Leeds Method here and here.
 * Spreadsheets: When working with DNA matches, it may be necessary to search for shared matches and then record a list of matches in each cluster on a spreadsheet. You may choose to create a new tab for each cluster or follow the Leeds Method. Spreadsheets are also great ways to build clusters of Matches across companies.

Other Clustering Situations
As you start clustering, you may run into some of the following situations.


 * Unknown Parents: When one or both parents are unknown, you cannot build clusters off of known relatives. However, clusters will help in the process of identifying those unknown parents. Start with the top match in the 1C-2C range. Build a cluster around shared matches. Repeat for all other members of the cluster. Then, take the first match not in the first cluster and build a cluster around them.
 * Endogamy, Pedigree Collapse, and Multiple Relationships. In cases of endogamy (a population which has been physically or socially isolated for hundreds of years), pedigree collapse (the same ancestors appear multiple times in the same tree) or when you are related in multiple ways to your matches, it can be difficult to create clearly defined clusters. Learn more about these kinds of situations and how to work with your DNA matches here, here, here, or here.
 * Matches in Multiple Clusters: When matches unexpectedly appear in multiple clusters, it may be for a number of different reasons. First, the match may descend from a much closer ancestor but be several generations further removed. Second, the match may be related in more than one way. For example, a match can be related on both your father's side of the family and mother's side of the family. Third, the match may appear in one of the clusters because it is a false positive as the DNA company reports them as a shared match if they share DNA with both you and the match you are working with whether or not they are related on the same line.
 * Isolating Matches. If you are researching an ancestor, you may want to focus just on matches related to that ancestor. This will be discussed more in later presentations.

Using DNA to Determine Relationships
Under Construction



Using DNA to Find Unknown Parents: A Case Study
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Additional Resources

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Using DNA to Solve a Brick Wall: A Case Study
Some brick wall research problems can be solved using a combination of sound, genealogical research coupled with DNA testing. To do so, you will want to follow these steps. These steps assume that you have taken a DNA test and have built a family tree. The case study for this presentation was done entirely using Ancestry DNA matches, but you can apply the same principles using other DNA companies.

Identify and Isolate your Matches

For those close matches, you may recognize their names or profiles. For other matches you will need to look at any tree information they have attached to their DNA profile. Do you recognize any of the names as being also found in your family tree? Or perhaps their ancestors lived in the same location as yours. Once you’ve identified how you are connected to a match, use the Shared Matches feature on Ancestry, to identify any other matches that share the same DNA. This process helps you to place all shared matches in one common cluster. Follow this procedure until you are able to isolate matches you are connected to along the brick wall line. See Grouping DNA Matches above for more ideas on how to identify and isolate your matches.

Depending on how far back the Brick Wall ancestor is you will want to make sure you isolate your match clusters to include only those who will share the same DNA. Those who connect to the children of the brick wall ancestor will also share the DNA of the spouse of the brick wall ancestor. Ideally you will want to identify matches who descend from possible siblings of the brick wall ancestor, and share the same parents.

Build Trees for your Matches

Next you will want to start building more fully the family trees of your identified and isolated matches. You can do that by using trees found online or by doing your own original research. These don’t have to be perfect at this point but rather provide a good basis for helping to craft a theory. It is most helpful to put all the matches in one shared tree and link the DNA match in your shared matches tree. As you start to unite these trees, you may see a pattern developing or a theory or two rise to the surface. Make notes regarding possible theories.

Craft a Theory

Based on the information you have put in your Shared matches tree, how are these matches connected? Where is the most likely place to find the Most Recent common Ancestor or the MRCA?

Confirm your Theory

In this case study, the information from the matches tree was entered in the What Are the Odds Tool found on DNAPainter.com. Once the data is entered you can test your theories by entering hypothesis or using the suggest hypothesis option. The WATO tool will tell you how likely your theory is to be true. The higher the number, the more likely you have a match.

Once you have your theory, do more research to determine if the theoretical MRCA lived in the area or associated with some of the same people as your ancestor. You may also need to reach out to other descendants of the MRCA to invite them to test to help confirm your hypothesis if you need more confirmation and regular genealogical research sources are not providing conclusive evidence.

Additional Resources
There are many videos online that may provide further assistance to your Brick Wall research and using DNA. Here are a few from RootsTech Connect held in February 2021.


 * Using DNA Tracing Ancestral Lines in the 1700s Using DNA RootsTech Connect Video series by Tim Janzen
 * The Case for DNA RootsTech Connect Video series by Renate Yarborough Sanders
 * Discovering African Ancestry through DNA RootsTech Connect Video series by Andre Kearns, Joanna Mountain, Steven MIcheletti, Sherman McRae, Yetunde Moronke Abiola, Fonte Felipe, Jerome Spears
 * I Found You: Methods for Finding Hidden Family Members RootsTech Connect Video by Barb Groth

Past DNA Day Celebrations
The Family History Library first celebrated DNA Day on April 25, 2019. Classes taught included:


 * DNA: An Introduction to Genetic Genealogy (Recording [[Media:An Introduction to DNA and Genealogy.April 2019.pdf|Handout]])
 * DNA: I've Tested, Now What? (Recording [[Media:I've Tested My DNA, Now What.pdf|Handout]])
 * Finding an Unknown Parent Using DNA: A Case Study ([[Media:Finding an Unknown Parent Using DNA Case Study.pdf|Handout]])
 * Making DNA Connections through Descendancy Research (Recording [[Media:Making DNA Connections Through Descendancy Research.pdf|Handout]])