The Tree of Mankind from FTDNA (Mike Sager)

GGI2020 Belfast - We will explore the Y chromosome haplotree in a variety of ways; from how the tree is built to tips and tricks for understanding and interpreting, and how new samples are incorporated to some of the more notable results FTDNA has produced.
This lecture was presented at Genetic Genealogy Ireland 2020 in Belfast. Please note that these GGI videos are copyrighted to the presenter and should only be used for personal study. They are not to be used for any other purpose without the presenter's express permission. Also, please note that because this is a rapidly advancing field, the content may quickly become outdated. The lectures were sponsored by FamilyTreeDNA (at www.ftdna.com) and organised by Maurice Gleeson, a volunteer from ISOGG (International Society of Genetic Genealogy at www.isogg.org). ISOGG volunteers provided free DNA advice and support for members of the public at the conference.

[@s.s.p.9680]

35:26 Thanks a lot for the work! A little elaboration - the Syrian D-FT75 is not "Russian". His mother is Russian, but his father still lives in Syria. Ruslan Al-Bitar himself was conceived in the Middle East.

[@TheDanEdwards]

(about 12:08 in video) "oldest Y chromosome known" - I wish FTDNA would stop with this language. All Y chromosomes don't have any age, unless one wants to start a clock when the meiosis occurred which formed the sperm that became the human, in which case the median age of a human Y chromosome on this planet is around 30 years old.
A better way to describe A00 (or anywhere a branch occurs in a tree of descent) is to say that A00, in conjunction with B, F, and other A clades, gives us information on the *most distant* branching of all Y chromosome clades.
This may be pedantic, but it is important to understand what is happening in the chromosomes, because any extant A00 Y is just as distant from the ancient branching event as any other human Y chromosome. Indeed, any single extant Y chromosome (in any clade, say F,) may have fewer actual generations back to the oldest common Y ancestor-of-all than some other man's Y. So someone whose Y is an R, for example, could have fewer Y generations back to the MRCA than say someone who is A00, in which case that particular R Y is "oldest" as in having the fewest meioses to the present time from the oldest branching event of all extant Y.

[@grandmasgenes6793]

Oldest Chromosome, "known", not oldest chromosome ever.

[@TheDanEdwards]

​@@grandmasgenes6793 Still, it's misleading language. Some guy's A00 Y chromosome is no "older" (assuming we're not talking birth-age) than another man's non-A chromosome.

[@TheDanEdwards]

​@@djknox2 Well, it's difficult to know what someone means unless they can clearly describe that which they are discussing. But in this case the more pressing issue, I think, is how to convey information to a lay audience that likely has little background knowledge of the subject.

[@CaomhanOMurchadha]

@@TheDanEdwards absolutely. Especially with the Kangz and Qweenz. Look at all the comments on the video for the oldest mitochondrial dna. She be a fine ayuss queen oh lawd sheeeit. It's actually worse than that. lol

[@EbikeAdventures667]

You don't know what you are talking about!!!!