[vasilipupkin]

come on, you are engaging in pointless sophistry. Common ancestry doesn't mean that it involves 100% guaranteed common transfer of genes every time - it just means that common transfer of genes was quite likely to take place at least relatively often. In the case of Ashkenazi Jews, we know it did.

[jklinger410]

I'm just trying to point out that you don't have to share genes with an ethnic group to belong to it.

[vasilipupkin]

this is not about "have to" or "don't have to", but about likelihood. Likelihood is high enough that they do genetic testing on ashkenazi jews.