but that you know is bollocks!
My Mum insists that anything that you can inherit genetically from your family always skips a generation.
My Mum's blood is negative. As is mine. She asserts that I must have inherited that from my Grandmother. And she must have inherited hers from her grandmother.
Bonkers. I know that genetic traits can skip generations, but not always and not with such predictability. But she won't have it.