HARTLEY Surname DNA Project- Background



Artley, de Harcla, Harclay, Hardclay, Hardeley, Hartel, Hartelay, Hartely, Harthelay, Hartle, Hartlee, Hartley, Hatley, Hertel, Hertelay, Herteley, Hertle, Hertlee, Hertley, Hurtley


This Project is aimed at those who have the surname HARTLEY, to enable members to research DNA linked to that surname.

HARTLEY Family Tree Genealogy Group on Facebook: 

The HARTLEY Family Surname Genealogy Project: 

The HARTLEY Surname Project at FTDNA: 

HARTLEY Surname DNA Project - Yahoo Group: http://groups.yahoo.com/group.hartleyDNA

An updated R1b-Tree can be seen at: 


A haplogroup is a group of descendant individuals from a single founder who all share a common SNP mutation. Individuals can test for these SNPs to determine their haplogroup assignment, which is often reflective of distant geographic ancestry. Membership in a particular haplogroup thus indicates broad population and geographic ancestry while other mutations in descendant haplotypes can reflect recent genealogical ancestry.


A SNP (single nucleotide polymorphism) is a variation in DNA sequence between individuals involving a difference at a single base-pair. SNPs generally have lower mutation rates than STRs and are often sufficiently stable to robustly define haplogroups.

"Private" SNPs:

"Private" SNPs on the Y chromosome correspond to relatively recent mutations that have not yet been observed in a significant number of other individuals in the same haplogroup. Some of these will eventually be incorporated into the Y-tree with further research. Others may provide clues about recent genealogical ancestry.


STR (short tandem repeats) are a type of molecular marker consisting of short DNA letter repeats (such as CACA). These markers have a high rate of mutation and are accordingly useful in determining population genetic differences. In the Y chromosome line, SNPs and STRs in conjunction serve to show differences between individuals and groups in their DNA lineages. In short, STRs are one part of the puzzle in everyone's Y chromosome DNA heritage.

General Fund

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