Sifford / Siffert / Siefert and Variation Surname Project - Y-DNA Results Overview

For genealogy within the most recent fifteen generations, STR markers help define paternal lineages. Y-DNA STR markers change (mutate) often enough that most men who share the same STR results also share a recent paternal lineage. This page displays Y-Chromosome DNA (Y-DNA) STR results for the project. The columns display each project member's kit number, paternal ancestry information according to project settings, the paternal tree branch (haplogroup), and actual STR marker results. In the haplogroups column, haplogroups in green are confirmed by SNP testing. Haplogroups in red are predicted. Above each subgroup, we display the minimum, maximum and mode values for each STR marker in the subgroup. STR marker values that differ from the mode values are color-coded. You can learn more about this page in our Help Center.