Help:DNA Confirmation

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Have you taken a DNA test? Have you found matches and know how those matches are related to you?

On WikiTree you may be able to use those matching tests to strengthen and support your traditional genealogy and mark some parental relationships "Confirmed with DNA". DNA-confirmed.gif

Contents

Requirements for Marking a Relationship as "Confirmed with DNA"

For each parental relationship marked "Confirmed with DNA" you need to enter a source citation (see examples below) on the child's profile that includes all the following elements:

  • Whether the paternal or maternal (or both) relationship is confirmed by the DNA test comparison.
  • Names of the test takers. (Initials can be used. Do not reveal any information about living people unless it is publicly displayed by them on their WikiTree profile.)
  • Name of DNA testing company or third-party website where the tests were compared.
  • Amount of shared DNA.
  • Relationship of the test takers to one another.
  • Relationship of each test taker to their MRCA(s).

It's also recommended that at least one of the test takers enter their DNA test on WikiTree, and set their profile's privacy level as Private with a Public Family Tree or higher.

If there isn’t a proper source citation the "Confirmed with DNA" relationship status should be removed, by you or by someone else.

Examples

One-to-One FTDNA Family Finder Confirmation

Follow the General Confirmation Instructions above.

Is the relationship of the two test takers, through traditional genealogy, third cousin or closer, and are the expected average DNA sharing amounts and the predicted relationship range in Family Finder "Matches" in approximate agreement with the relationship?

If yes, you should be able to use the WikiTree Relationship Finder to find how the two test takers are related, the MRCA(s) for the two test takers, and which parental relationships can be marked "confirmed with DNA". On Family Tree DNA’s Family Finder Matches page you can see the shared cM and relationship range. Use the Family Tree DNA Chromosome Browser to determine the number of shared segments.

If your match is not a third cousin or closer, see Autosomal Triangulation on WikiTree.

Here is an example of what to add to the == Sources == section of each child with a parent marked "Confirmed with DNA":

* Paternal relationship is confirmed by a Family Finder test match between [[Johnson-18438|Kay (Johnson) Wilson]] and her paternal aunt [[Johnson-17543|Dorothy (Johnson) Hughes]]. Their MRCAs are [[Johnson-17545|O.V. Johnson]] and [[Murdoch-292|Grace Murdoch]], grandparents of [[Johnson-18438|Kay (Johnson) Wilson]] and parents of [[Johnson-17543|Dorothy (Johnson) Hughes]]. Predicted relationship from FTDNA: Niece/Aunt, based on sharing 1958 cM across 49 segments.

One-to-One 23andMe Confirmation

Follow the General Confirmation Instructions above.

Is the relationship of the two test takers, through traditional genealogy, third cousin or closer, and are the expected average DNA sharing amounts and the predicted relationship in 23andMe’s TOOLS > DNA Relatives in approximate agreement with the relationship?

If yes, you should be able to use the WikiTree Relationship Finder to find how the two test takers are related, the MRCA(s) for the two test takers, and which parental relationships can be marked ‘confirmed with DNA.’ On 23andMe’s TOOLS>DNA Comparison you can find the amount of shared cM.

If your match is not a third cousin or closer, see Autosomal Triangulation on WikiTree.

Here is an example of what to add to the == Sources == section of each child with a parent marked "Confirmed with DNA":

* Maternal relationship is confirmed by a 23andMe test match between [[Whitten-1|Chris Whitten]] and [[Nally-4|Rebecca (Nally) Syphers]], first cousins once removed. Their MRCAs are [[Bartlett-4|Hollis Bartlett Sr.]] and [[Storrs-2|May Storrs]], the great grandparents of [[Whitten-1|Chris Whitten]] and grandparents of [[Nally-4|Rebecca (Nally) Syphers]]. Predicted relationship from 23andMe: First to Second Cousin, based on sharing 498 cM across 21 segments.

One-to-One AncestryDNA Confirmation

Follow the General Confirmation Instructions above.

Is the relationship of the two test takers, through traditional genealogy, third cousin or closer, and are the expected average DNA sharing amounts and the stated possible range of the match at AncestryDNA in approximate agreement with the relationship?

If yes, you should be able to use the WikiTree Relationship Finder to find how the two test takers are related, the MRCA(s) for the two test takers, and which parental relationships can be marked "confirmed with DNA". To find the shared cM and segments see AncestryDNA’s amount of shared DNA feature.

If your match is not a third cousin or closer, see Autosomal Triangulation on WikiTree.

Here is an example of what to add to the == Sources == section of each child with a parent marked "Confirmed with DNA":

* Paternal relationship is confirmed by an AncestryDNA test match between [[Whitten-1|Chris Whitten]] and his second cousin. Their MRCAs are their great grandparents, [[Bartlett-4|Hollis Bartlett Sr.]] and [[Storrs-2|May Storrs]]. Predicted relationship from AncestryDNA: 2nd Cousins, based on sharing 150.3 cM across 9 segments; Confidence: Extremely High.

One-to-One MyHeritage Confirmation

Follow the General Confirmation Instructions above.

Is the relationship of the two test takers, through traditional genealogy, third cousin or closer, and are the expected average DNA sharing amounts and the predicted relationship range in MyHeritage “DNA Matches” in approximate agreement with the relationship?

If yes, you should be able to use the WikiTree Relationship Finder to find how the two test takers are related, the MRCA(s) for the two test takers, and which parental relationships can be marked "confirmed with DNA".

If your match is not a third cousin or closer, see Autosomal Triangulation on WikiTree.

Here is an example of what to add to the == Sources == section of each child with a parent marked "Confirmed with DNA":

* Maternal relationship is confirmed by a MyHeritage test match between [[Brown-8212|Abby Glann]] and her 2nd cousin once removed. Their MRCAs are [[Fraaken-1|Franklin Fraaken]] and [[Olds-43|Grace Olds]], the 2nd great grandparents of [[Brown-8212|Abby Glann]] and the great grandparents of her cousin. Predicted relationship from MyHeritage: 1st cousin twice removed to 2nd cousin twice removed, based on sharing 143.1 cM across 8 segments.

One-to-One GEDmatch Confirmation

Follow the General Confirmation Instructions above.

Is the relationship of the two test takers, through traditional genealogy, third cousin or closer, and are the expected average DNA sharing amounts and GEDmatch’s One-to-one utility estimate of the number of generations to the MRCA in approximate agreement with the relationship?

If yes, you should be able to use the WikiTree Relationship Finder to find how the two test takers are related, the MRCA(s) for the two test takers, and which parental relationships can be marked "confirmed with DNA". Use GEDmatch’s One-to-One utility to determine the generations to MRCA, shared cM and the number of segments shared.

If your match is not a third cousin or closer, see Autosomal Triangulation on WikiTree.

Here is an example of what to add to the == Sources == section of each child with a parent marked "Confirmed with DNA":

* Paternal and maternal relationships are confirmed by a GEDmatch test match between [[Johnson-18438|Kay (Johnson) Wilson]] GEDmatch T596586 and her sister [[Johnson-18997|Lynn (Johnson) Andrews]] GEDmatch T408316. Their MRCAs are their parents [[Johnson-17544|Douglas Johnson]] and [[Smith-38566|Phyllis Smith]]. Estimated number of generations to MRCA = 1.2, based on sharing 2654.8 cM across 46 segments.

Y-Chromosome Confirmation

Follow the General Confirmation Instructions above.

Each of the matching tests must be for at least 37 markers. If their profiles are accessible to you, use the WikiTree Relationship Finder to find how the two test takers are related, the MRCA(s) for the two test takers, and which parental relationships can be marked "confirmed with DNA". On Family Tree DNA’s yDNA Matches page, click on the red TiP icon for a TiP report. Set it to display a value at every generation. Does the Family Tree DNA TiP report predict a similar number of generations between the test takers as traditional genealogy?

If yes, here is an example of what to add to the == Sources == section of each son with a father marked "Confirmed with DNA" using yDNA:

* Paternal relationship is confirmed through Y-chromosome DNA testing. [[Smith-44676|William Waugh Smith]], FTDNA kit #95454, and his 6th cousin once removed, [[Smith-81508|Len Smith]], FTDNA kit #216226, match at a Genetic Distance of 2 on 67 markers thereby confirming their direct paternal lines back to their MRCA [[Smith-15895|Thomas Smith]]. FTDNA indicates that the probability the two share a common ancestor within the last 7 generations is 91.73% and within the last 8 generations is 94.73%.

For X and mtDNA confirmations, see Advanced DNA Confirmations.

Sections for === DNA === in Biographies

In addition to the source citation many members choose to include a === DNA === subsection under the == Biography ==. This is like a Research Notes section for genetic genealogy.


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This page was last modified 16:41, 14 November 2018. This page has been accessed 58,036 times.