The slides from a presentation by Brad Larkin in October 2022 on Intermediate and Advanced Y-DNA Topics for genetic genealogy have been posted here on SurnameDNA Journal.
This session’s goal was to offer a deeper understanding of Y-DNA NextGen SNP genetic genealogy tests like Big Y-700 and YSeq WGS. The approach was to go from from Biology to Data to the Phylogenetic Tree to Geographic Interpretation.
Topics included:
- explanation of raw read alignment to the genome which produces your SNP results
- understanding your terminal SNP and why it changes
- how to use Novel Variants / Unnamed Variants to extend the phylogenetic tree for your family
- tips on getting the most info and avoiding bugs in current tools using real world examples