Peter Douglas Zohrab has had genetic testing done (by more than one company) of his male-line (Y-chromosome) ancestry:

1. The first, 12-marker test, was carried out as part of the Genographic Project.
2. Then Family Tree DNA carried out a P25 test, and found that he (and his male-line ancestors) were part of Haplogroup R1b1.
3. Next, Richard Stevens paid for Peter Zohrab to have the P312 test with Family Tree DNA, in order to see if Peter Zohrab was eligible for membership of his group, which was about the genetics of supposed Indo-European speakers.  Peter Zohrab was found to be P312- on that test, and therefore ineligible for membership of that project group.
4. Richard Stevens then referred Peter on to two further groups, run by Mark Arslan and Vince Vizachero, respectively.
5. Peter joined the group run by Vince Vizachero, which is for people both P312- and U106-, and which contributed to the cost of a Deep Clade-R test for him. This confirmed that he (and his male-line ancestors) were, more precisely, part of the R1b1b2a1 haplogroup.  Later, this was narrowed down to R1b1b2a1a.
6. Then Peter Zohrab got Ancestry.com DNA to carry out a 46-marker test of his Family Tree DNA, so that he would have more meaningful results to contribute to the Armenian research group, which he joined, and which was run by Mark Arslan, and also so that he would have more meaningful results to compare with other potential family members in his own Zohrab project.
7. Later, Peter got Family Tree DNA to carry out a 67-marker test, both for the above reasons and because Family Tree DNA and its associated research groups did not recognise results produced by other companies.

N.B. Males can get both their male-line (Y-chromosome) and female-line (mitochondrial DNA) analysed, but the Genographic Project only does the male line for you if you put yourself down as a male. A cynic like me would say that that's because women can only get their female line done, having no Y-chromosome -- if it were the other way around, women would be getting both results for the price of one! The Genographic Project suggested (by email) that I could put myself down as a female and pay for another test, in which case I would get results for my female line as well -- or a female relative (a sister or mother -- but a maternal grandmother or double-cousin would presumably do) could get hers done.