05/24/2026
Mayflower Y-DNA and mtDNA wiki - This Project utilizes Y-DNA and mtDNA. It does NOT utilize autosomal DNA (such as 23andMe and Ancestry DNA).
The Mayflower DNA Project is using cutting-edge genetic genealogy research based on testing of living descendants of passengers of the Mayflower's 1620 voyage.
Help resolve unanswered questions about the ancestry and genealogy of the passengers of the Mayflower
Create a resource repository to help modern individuals better understand their connections to Mayflower passengers and crew through genetic genealogy tests
Be a catalyst to have the General Society of Mayflower Descendants accept Y-DNA Y-SNP evidence as proof of lineage for individuals who cannot document their line back to a Mayflower ancestor, but whose NGS/WGS results prove they must be a patrilineal (all male line) descendant of a passenger.
This wiki traces the Y-DNA and mtDNA of Mayflower passengers, their spouses, and the spouses of their children and grandchildren. It does NOT work with autosomal DNA tests (such as AncestryDNA, 23andMe, etc.).
Because we inherit autosomal DNA from both of our parents (who in turn inherited their DNA from both of their parents, etc.) the amount of autosomal DNA we inherit from each of our ancestors decreases every generation.
After about 5-6 generations we no longer inherit any autosomal DNA from some of our ancestors. Almost all living Mayflower descendants are at least 10 generations removed from our Mayflower ancestor.
That far back, we only inherit DNA from a tiny fraction (much less than 1%) of our ancestors from that generation.
Even if we are lucky enough to have inherited autosomal DNA from a Mayflower ancestor, there really is no way to document which ancestors from that generation we inherited any of our DNA from.
The vast majority of descendants of Mayflower Passengers will NOT have inherited their Y-DNA or mtDNA from a family in this project.
Only males have the Y s*x chromosome and they inherit this chromosome solely from their father, who inherited it from his father, etc.
Thus, the Y-DNA follows the Patrilineal (not Paternal) line (father's father's father's father's etc.).
While everyone has mtDNA, we inherit this DNA solely from our mothers, who inherited her mtDNA solely from her mother.
Thus, the mtDNA follow the Matrilineal (not Maternal) line (mother's mother's mother's mother's etc.)
Please View My Comment below "Read Me First"
https://mayflowerdna.org/wiki/index.php/Mayflower_DNA:About
This Project utilizes Y-DNA and mtDNA. It does NOT utilize autosomal DNA (such as 23andMe and Ancestry DNA). You can view a video about Y-DNA and mtDNA here