[Graeme]

The problem with your freaky Serbs or Welshies is that their DNA would probably be similar to most of their ethnic group. I suppose when the DNA genes or groups of genes which actually code for a bigger nose, short legs, a thick neck and a heavy browridge are found then some atypical genes or alleles may be found. Being very heavily built and as the barber told me, with a big head I think I am sufficiently UP not to want to be Neanderthalic as well. Personally I would like to be a normal looking Mediterranid so that I didn't have to buy such big clothes from a limited number of shops.

The lack of mtDNA similarities with Neanderthals does not mean that the two humanoids did not interbred. It may be that the female line was bred out leaving no Neanderthal mtDNA.