Re: Using DNA matches to find Jewish ancestors #dna

Jesse Springer <Jessemspringer@...>

Fascinsting! Thanks for adding your knowledge here. 

On Tue, Jul 28, 2020, 12:51 PM Sally Bruckheimer via <> wrote:
Do all descendants of your great-grandfather all have similar Jewish DNA markers?  If they are only seen in one of his children's line it suggests differing parentage.

Every child inherits 50% of DNA from each parent, but each is a random assortment of the parent's DNA. So you and a sibling only share 25%. That is why organ transplant Dr. look at parents or children first for a good match.

So all descendants of a great-grandparent will not have the same Jewish DNA markers. There are a lot of markers checked, so DNA testing will probably find some, but not all the same.

Sally Bruckheimer
Molecular Biologist who knew this in high school
Princeton, NJ

Join to automatically receive all group messages.