[Angelino97]

All that matters is mom. There is no such thing as half Jewish.

According to Jewish law, that's true.

According to the law of DNA, that's not true.

According to Mormon law, if the Mormons baptize a Jew after death, that person is Mormon.

According to Canon law, if a person converts to Catholicism, that person is Catholic.

We all have our preferred law. I prefer the law of DNA for ethnicity, and Catholic Canon law to determine one's spiritual peoplehood.

[Paladin2]

There’s always mitochondrial DNA to track...

[Paladin2]

There’s always mitochondrial DNA to track...

[who_would_fardels_bear]

The story I heard is that the European Jews got there primarily by working their way up the Italian peninsula over generations until they settled in places that ultimately became Poland, Germany, etc.

If they were a mostly insular group, either by choice or forced segregation, then they would have retained their unique genetic markers. However, if there was some intermarriage with local populations then those markers would be significantly diluted with some self-proclaimed Jews having no Jewish genetic markers.

[MeanWestTexan]

I don’t care about any law but the Law.