Hemophilia and Other Blood Disorders

Interesting as it is I tend to agree with Lily. DNA testing was vital to establish beyond doubt that the remains were those of the Imperial Family but beyond that it has very little relevance.
Whether or not the descendants of Victoria had the faulty gene is mere guesswork although there are plenty of other descendants who were alleged to be carriers or sufferers who could at a push be tested but I don't really see the necessity. We know factually that some of Victoria's descendants had serious illnesses that appeared to involve a problem with clotting and appear to have been hereditary,

According to this, the disease was Christmas Disease/ Haemophilia B;

http://sciencenow.sciencemag.org/cgi/content/full/2009/1008/2