Big Y 700 DNA test results yield new haplogroup branches and “Time Trees” for C-P39 Y DNA haplogroup and Germain Doucet b. 1641 descendants

Big Y 700 DNA test results yield new haplogroup branches and “Time Trees” for C-P39 Y DNA haplogroup and Germain Doucet b. 1641 descendants

... by Marie Rundquist with Deadra Doucet Bourke, Contributor
February 22, 2023

Introduction
The discovery of the C-P39 Native Y chromosome DNA signature for genetic male descendants of Germain Doucet b. 1641, in 2008, had great significance for genealogists because the Native Y DNA signature attained for this line (1.) disproved a European ancestry for Germain Doucet b. 1641, (2.) disproved a father-son relationship between Germain Doucet b. 1641 and Germain Doucet Sr. of France and (3.) disproved that Pierre Doucet (b. ca 1621) and Germain Doucet (b. 1641) were blood brothers having descended from the same father.

Through exhaustive Y Chromosome DNA testing of numerous male, paternal line Doucet / Doucete descendants of Germain Doucet b. 1641, who was from Port Royal, Nova Scotia, Canada, our Acadian-Amerindian and C-P39 Y DNA projects have uncovered, validated, and then verified a Native American Y Chromosome DNA haplogroup signature (originally referred to as haplogroup C3b and now referred to as haplogroup C-P39) for his descendants through sons Charles, Claude and Laurent.

In 2019, the C-Z30754 single nucleotide polymorphism (SNP), or genetic marker, a subclade of the C-P39 Y DNA haplogroup, was identified as unique to genetic male, patrilineal (father to father) descendants of Germain Doucet b. 1641 through advanced Big Y 700 DNA testing. Y chromosome DNA is inherited through patrilineal line of descent and is passed, from one generation to the next, virtually unchanged, from father to father. Y chromosome DNA tests are separate test from mitochondrial and autosomal DNA tests and are for genetic males only.

The C-Z30754 marker also identified a new subclade of the C-P39 Y DNA haplogroup to which male descendants of Germain Doucet b. 1641 belong. Genetic male descendants of Germain Doucet b. 1641 who have had advanced Big Y 700 DNA test show a positive result for this marker (C-Z30754+) and the C-P39 marker (C-P39+) in Big Y 700 DNA test results.

Since the original identification of the C-Z30754 subclade as unique to the Germain Doucet b. 1641 surname lineage, new and unexpected branches, or subclades, of the C-Z30754 haplogroup have emerged among the Big Y 700 DNA test results of genetic male descendants of Germain Doucet b. 1641.

Further study of these new branches, and the SNPs (or genetic markers) that identify them, reveal that each new branch aligns, one-for-one, with a known surname lineage through a specific patrilineal line – traced from father to father - within the Germain Doucet b. 1641 family tree. The purpose of this update is to show how all of this works – and introduce some fascinating new Big Y 700 DNA tools and capabilities we may all use for our own genetic genealogy research at the same time!

Note:  Click here to read the rest of the report -- and find out about some surprising new discoveries about Doucet DNA we came upon in our research!