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I'm 100% German(ic)...in fact northern German, which means there shouldn't be any genetic differences between me and our British members here.
I'm unsure though why "Nordic" has been listed as it's own option. From a wider point of view, even people in Sweden and Norway can be classified as Germanic. You're getting into rather miniscule subdivisions there. I would classify any place in north western Europe where the Romans never gained an influence as "Germanic".