"G2" refers to a relatively rare haplogroup based on DNA testing of the Y chromosome, which is passed down virtually unchanged from father to son for generations. The individuals on this site have all tested as belonging to the G2 haplogroup, which indicates a common ancestor. Across northwestern Europe, G haplotyples, to which type G2 belongs, occur at a low frequence: 1-3%.

The analysis of 25 loci of a DNA sample produces numerical values (alleles) that are used by geneticists to determine a man's haplotype. If these alleles exactly match those of another man, the two men belong to the same haplotype and are descendants of a common ancestor, although that ancestor may have lived a long time in the past. Some men in the G2 type may have a surname other than Harper because the common ancestor lived prior to the adoption of surnames. Nevertheless, this provides an additional genealogical tool in locating relatives when a paper trail may not exist.

The tables below provide the 25 allele values for a man exactly matching the G2 haplotype.

DYS #	393	390	19/394	391	385a	385b	426	388	439	389-1	392	389-2
Allele	13	24	16	10	14	14	11	12	11	12	11	30

 

We hope that as more testing of the Y chromosome We hope that as more testing of the Y chromosome takes place, the number of Harpers in the G2 group will increase and we will eventuallyl be able to establish a link with a common ancestor.

The following links may be of interest:

Haplogroup G Web Site. This site contains information about DNA Y Chromosomes and covers in detail the origins and "travels" of Haplogroup G to which our G2 belongs: http://home.comcast.net/~whitathey/indexg.htm

Testing for the Harper surname: Information about DNA testing for the Harper surname

Ysearch

To watch a video on DNA testing click here.