My grandmother married a widower in 1902, who had had no children during the 7 years of his previous marriage. A further 8 years went by without any children - then she had 9 children over the next 10 years! Her husband died in 1940 and she then married a long time friend of her husband. In 1959, on her deathbed, she caused absolute consternation in the family by announcing that all her children had been fathered by this man! As far as I know I was the only person of my generation to be told of this. Within a couple of days it was concluded that it was not true - that she'd said it because she feared the family wouldn't look after him (they didn't much like him). I was told never to talk about it.

Quite a story, eh?

My question is - are there DNA tests that can establish whether I have Shield genes?