Bradsport.com - Genetic Genealogy
The science of genetics have been around since the sweetpea experiments of Gregor Mendel.
The following are my current papers on Genetics and Genealogy and Leonards and Y-DNA. The science is evolving so fast that these papers will be be revised frequently.
Genetics and Genealogy Research
has a discussion of Y-DNA, Relative Finder,
Leonard Y-DNA -
has discussion specific to the Leonards and Y-DNA