I used to work in this field, and we would do pedigree analysis a lot on families, usually with some kind of disease.
Anyway, we would construct the family tree, plug it into the stats software and it would tell us: “No. These two people are not cousins, but something closer.”
We couldn’t ask the families, so we would swap a grandfather for a father, or a mother for a sister, and - hey presto - everything lines up.
This happened in about 1 in 10 families we studied. This type of thing is way waaay more common than people think.
I used to work in this field, and we would do pedigree analysis a lot on families, usually with some kind of disease.
Anyway, we would construct the family tree, plug it into the stats software and it would tell us: “No. These two people are not cousins, but something closer.”
We couldn’t ask the families, so we would swap a grandfather for a father, or a mother for a sister, and - hey presto - everything lines up.
This happened in about 1 in 10 families we studied. This type of thing is way waaay more common than people think.
Thanks for sharing. Nice to have less anacdotal evidence.
Well nice is not the right word. But I’m sure you know what I mean,
Usually don’t have to look too far to start seeing the skeletons :P