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About us

This is the web site for the Kidd Y chromosome DNA study. It is open to any male with the Kidd, Kid, Kidde, Kiddell, Kiddoo, Kiddie, Keddie, Kidder surname or other variant spellings of that name. Click on the tab at the top of this page to read more about the Kidd study. Steven Perkins and Sandra Kidd are the co-administrators.

To join this group, click on "JOIN REQUEST" at the top of this page or email either of the group co-administrators.

The tabs at the top of the page will take you to more information about the Kidd Y-DNA study.

  • Click On "About This Group" to see pages about the Background, Goals, News, and Results summary about the study.
  • Click on "Y-DNA Results" to view the markers for the study participants.  The classic view shows the markers for each participant, at 12, 25, 37, and 67 markers.  The colorized view shows where members of each subgroup have variations, or mutations, from the average set of markers (called a mode) for that subgroup.  See "About This Group" then "Results" for a fuller explanation of the subgroups.  
  • Click on "DNA FAQ" to find answers to general questions about using DNA results in genealogy research.  If you have questions specific to the Kidd study, or cannot find an answer to your question under FAQs, please contact Sandra Kidd at skkidd AT 

To make an online donation to the Kidd Y-DNA General Fund to support sponsorships for Y-DNA testing, please follow this link:

Why use DNA testing?
If you are stuck at a brick wall with your research, DNA testing may match you to another family you can share research with to find your common ancestor. Finding your genetic match will help you to focus your research on families you have a connection to, instead of researching all the families with the same name in the same area. This should save you money on research materials.

Reasons not to use DNA testing
If it would bother you to find out that you are not a genetic match to your family, don't do DNA testing. It is also recommended that you do not test several members of the same immediate family if finding out they do not match would cause you problems.

Who should test?
You should test your oldest living direct line ancestor in either your paternal (Y DNA) or maternal (mtDNA) lines.

What tests should be used?
If you imagine that you are at the top of a triangle, then your paternal line is the right side of the triangle, and your maternal line is the left side. All your other ancestral lines are between those and can be found by testing direct line descendants of your ancestors.
The Y DNA test is for finding your paternal line ancestry. Only males can be tested since only males have a Y chromosome.  Y DNA tests can be ordered for 12, 25, 37, 67, or 111 markers.  The Kidd study recommends its participants consider ordering a minimum of 37 markers.
The mtDNA test is for finding your maternal line ancestry. Both males and females can be tested since you get your mtDNA from your mother. Only females pass their mtDNA on to their children.
There are other tests, the CODIS test used by the police, and paternity tests, but these are not appropriate for genealogy. They can help with siblingship or paternity questions.
Autosomal DNA
FTDNA now offers the Family Finder autosomal DNA test which tests your 22 chromosomes and the X chromosome.  At this time it is best used to confirm your most recent genealogy within 5 generations.  The X chromosome is not yet used in the reports.