• 25 members

About us

The Cosby DNA Project is open to all those genetically related to the Cosby surname and have submitted a DNA sample to Family Tree DNA. Variants of the surname include Cosbey, Cosbee and others not determined yet. This project focuses on the Y-chromosome test which tests specifically for the Y-DNA chromosome passed from generation to generation along direct male lines. A Y-DNA test of 67 markers is recommended. Those with genetic ties who have taken the atDNA (autosomal Family Finder test) or the mtDNA (mitochondrial test – the chromosome passed through the female line) are also welcomed to join the project. The goal of this project is: • to group members into “lineages” as defined by the unique mutations of the Y-DNA tests; • identify a patriarch (founding father) for each lineage; • link the lineages back into their deep ancestral origins.