This comes from the religious law. I don’t think it has anything to do with chromosomes. There are still families that traditionally believe that though, despite not being religious. I haven’t met many people who identify as Jewish or partially Jewish due to their father being Jewish though.
If it’s the mother then they are Jewish, if it’s the father they are not
I didn’t know the genes for Judaism were located in the X chromosome.
That’s how they view it
This comes from the religious law. I don’t think it has anything to do with chromosomes. There are still families that traditionally believe that though, despite not being religious. I haven’t met many people who identify as Jewish or partially Jewish due to their father being Jewish though.