As far as I can tell it ignores the influence of the Normans who were  
Germanic and also any effect the stationing of Germanic auxiliaries  
in Britain may have had. I suspect that the choice of "apartheid" to  
describe it was not a mistake and was an attempt to garner additional  
notice in the press.

On Jul 21, 2006, at 5:52, J C Blyth wrote:

> I think I may be missing something from reading the original paper.  
> Please enlighten me. It appears to be a comparison of genetic data  
> on the Y-chromosome from Anglo-Saxon "invaders" and the modern  
> population. How does this reflect subsequent migrations? The  
> Normans of the 11th cent. came from largely similar genetic stock,  
> as I understood it. I am confused!