I did an DNA test through ancestry.com and the findings are that my DNA is:
European Jewish 48%
West European 8%
That fits pretty well with what I know of my family tree. Through the DNA test they have identified a couple of dozen other people who have done the test and are related to me (third to fifth cousins).
A mate asked on Facebook that as I am 32% British, am I happy to retain the union jack on the NZ flag. My response was only if it has the Star of David on it also 🙂