You should test more Y-chromosome DNA short tandem repeat (STR) markers when you wish to compare additional markers against others with similar results. They [...]
Yes. All of our Y-chromosome lineages trace back to a common ancestor who lived in Africa at least 115,000 years ago. Some lineages migrated out [...]
For palindromic markers, the infinite allele method counts a difference for two types of changes: a mismatch and a copy number change.
Mismatches occur when the [...]
Y-chromosome DNA (Y-DNA) tests trace both recent and distant generations. The number of generations traced by a Y-chromosome DNA test depends on the type [...]
A multi-copy STR marker is one where there are multiple versions of the same STR in different locations on the Y-chromosome. Each STR copy [...]
We believe that the rate of unannounced adoption or false paternity is about 1 – 3% per generation and compounds each generation. When confirming [...]