In the paragraphs below, we describe the results to date of the Doty Y-DNA Project as they pertain to our deep ancestral roots. To see all our test results in one table, please go to
To see those lineages that Y-DNA participants have made available, go to Lineage.
For a brief explanation of Y-DNA tests and their interpretation, please click on Y-DNA Primer
DNA and Haplogroups
In addition to being members of a family with a particular surname or one of its variants, we are all part of much larger population groups called haplogroups by population geneticists. The origins of these haplogroups, which stem from genetic mutations that occur over time in different peoples, can be traced back to the dawn of “modern humans” some 60,000 to 50,000 years ago.
The same Y-DNA test that our participants take to clarify their family heritage can be used to project the larger paternal haplogroup to which they might belong , with a very high level of probability. In addition, further DNA tests can be taken to pinpoint these deeper paternal ancestral roots with even greater specificity and certainty.
Deep maternal ancestral roots can also be uncovered through DNA testing, and both male and female members of our group may participate in this project. To date, just one person has chosen to do so, though we expect others to follow. Instead of using our Y-DNA for these tests, our mtDNA, the DNA that we inherit from our mothers, is used.
The ancient ancestors of haplogroups R and I most likely were part of a band of humans that apparently left
Perhaps some 45,000 years ago the people migrating in a northerly direction toward the
The R Haplogroup
The ancestors of the R haplogroup gradually expanded eastward from what today would be called the
As they moved north, these people again broke into two major population groups. One would again resume its eastward expansion eventually reaching the northeastern edge of
As time passed and the European continent cooled with the expansion of the ice sheets during the last Glacial Maximum some 20,000 to 15,000 years ago, the people of the R1b haplogroup most likely took refuge on the
The I Haplogroup
The ancestors of the I haplogroup apparently remained in the Middle East for thousands of years after the Eurasian Clan split away. Perhaps between 30,000 and 20,000 years ago, these I haplogroup ancestors began to expand toward the north and west into the Balkans, and many of them eventually continued on into Central and Southern Europe.
With the sequencing of the human genome in the year 2000, geneticists and genealogists can now join as full partners with anthropologists, linguists, sociologists and other scientists in the search for our human origins. With every passing day, it seems that more and more information about these deep ancestral roots comes to light.
To participate in our Doty-Doten Y-DNA Project:
• Go to the Doty project on the Family Tree DNA Website.