Jeremy Lehmann

Genealogy 🧬 and weather nerd 🌪️

[Jeremy Lehmann @jilehmann]

My latest genealogy presentation about recombinant chromosomes and visual phasing is now up on YouTube. Check it out here: https://t.co/vKOvSvohoi.

Visual phasing projects are considered the "ultimate genealogy puzzles" and I would tend to agree!

[Jeremy Lehmann @jilehmann]

@JewishGenomics That would be great!

[Jeremy Lehmann @jilehmann]

@JewishGenomics Thanks!

These videos take time to make and I'm busy with a few other large projects, but I think it would be nice to help amplify the great work that you are doing!

[Jeremy Lehmann @jilehmann]

@JewishGenomics I am thinking of making a video about the R-M12205 discovery. I think it could be nice to provide some context about the other lineages that exist.

[Jeremy Lehmann @jilehmann]

@JewishGenomics Thank you! Fascinating.

[Jewish Genetic Discovery Foundation @JewishGenomics]

We’re back with the official visual and the official estimate for the bombshell split of R-Y2619.

The famous Ashkenazi Levite line, now renamed R-M12205, has a new closest cousin: a Tajik man from Badakhshan.

Their ancestors parted ways c. 600 BCE, according to @FamilyTreeDNA.

[Jeremy Lehmann @jilehmann]

@Rufioru @JewishGenomics I did not know this. This individual should take a Big Y test!

[Jeremy Lehmann @jilehmann]

@Rufioru @JewishGenomics That's great that you've searched.

There does seem to be one on 23andMe, from what others have told me. I have seen a screenshot that confirms R-CTS6 and that he's not AJ.

Perhaps you could encourage BJ Levites to take Y-DNA tests, that could potentially uncover others.

[Jeremy Lehmann @jilehmann]

@Rufioru @JewishGenomics No, this is someone different.

[Jeremy Lehmann @jilehmann]

@JewishGenomics Has there been communication with the tester? That oftentimes can be a challenge.

If it hasn't been tried before, I'd recommend paying the tester to take a Big Y test and going beyond paying for the test itself.

It seems like his test could be crucially important.

[Jeremy Lehmann @jilehmann]

@Afghan_DNA Thank you for helping to sponsor the Big Y test! The collaboration is great to see.

My Y-DNA lineage is part of G-M377 (G-BY764) and I thought about the similarity of this lineage to R-M12205 with its earlier connections.

A lot less is currently known about G-M377 though.

[Jeremy Lehmann @jilehmann]

@JewishGenomics I'd be happy to support this. We can be in touch.

[Jeremy Lehmann @jilehmann]

@JewishGenomics Amen!

So exciting to have had these two splits this year!

[Jeremy Lehmann @jilehmann]

This is huge Y-DNA news! Congratulations to @JewishGenomics for this huge breakthrough!

It will take some time for me to get used to the new R-M12205 haplogroup name for Ashkenazi Jewish Levites.

[Jeremy Lehmann @jilehmann]

@JewishGenomics Are all of the Jews from the Norwich study considered to have been of Tzarfati origin? I ask because I am helping out someone who descends from J-ZS4297, and I believe one of the Norwich children was from this lineage.

[Jeremy Lehmann @jilehmann]

@Twinola2 @JewishGenomics As a Yekke myself on my paternal line, I would recommend testing! There isn't as much representation of Yekkes among AJ Big Y testers. Although AJ lineages are already well-established, it can help resolve connections closer to a genealogical time frame.

[Jeremy Lehmann @jilehmann]

@JewishGenomics I'm in your camp as well. But we shall see!

How were you able to identify this tester? I'm curious if there are other similar opportunities for other AJ lineages whose closest non-Jewish connections date back to either the Iron Age or Bronze Age.