[Berosus]

Yes, but “Jewish” cannot be determined through a DNA test. I guess she isn’t as stupid as we thought.

In 1999 the Lemba, a small black tribe in Zimbabwe and South Africa that claims Jewish ancestry, submitted to DNA testing, and they have the "Cohanim gene," which so far has only turned up on the Y chromosome of Jewish men from the tribe of Levi. That means the Lemba are not only Jewish, but also Levites, members of the ancient priestly class, so the Israeli government is allowing them to emigrate to Israel. Of course, since Ms. Occasional-Cortex isn't a man, that critical gene shouldn't appear in any DNA test she takes.

[jjotto]

The secular government of Israel allows many non-Jews to immigrate. Such immigrants either take part in a recognized non-Jewish community, convert to Judaism, or travel outside of Israel if they want to do something like get married.

Two converts to Judaism could marry and have many children who would be 100% Jewish without having any Jewish DNA at all. And the paternal half of one’s DNA could be ‘Jewish’ without one being a Jew at all. The confusion over this is why American Jews are in danger of writing themselves out of Jewish history like Sadducees, Samaritans, Sabbateans, Frankists and others.

[SJackson]

In 1999 the Lemba, a small black tribe in Zimbabwe and South Africa that claims Jewish ancestry, submitted to DNA testing, and they have the "Cohanim gene," which so far has only turned up on the Y chromosome of Jewish men from the tribe of Levi. That means the Lemba are not only Jewish, but also Levites, members of the ancient priestly class, so the Israeli government is allowing them to emigrate to Israel.

They undergo conversion first. The genes mean nothing. Alexandria would have to convert first too. Unless she can prove a direct matrilineal line to a Jewish g-g-g-g-g or whatever mother. And that wouldn't be easy.