Musings on the D in BMD

I’ve been researching my family tree for seven years now. I admit that that isn’t very far back—I haven’t even gotten to my own birth yet. My genealogical origin story is called The Missing Chevalier. The commencement of the very rigid journey was...
Matrilineal Ancestors of My Mother and Father

Matrilineal Ancestors of My Mother and Father

For decades these two lines of people’s trees were stuck in the late 18th century. With very little time spent I was able to take two lines of matrilineal ancestors back to the 17th century. I’m not normally a fan of researching my ancestors as far back as...

No Recombination of X Chromosomes

What’s the probability that two children share one whole copy of the X chromosome without sharing a father? I’ve made an X chromosome model that predicts shared X DNA percentages and ranges for various ancestors, but I haven’t yet calculated ranges...