watch something else about DNA, check out this video down
of chip so there's not as much snips to compare. Now, if you
it's so high here's some family tree DNA that's three hundred
thousand those are going to be the old ones. Same with that my
using in the last I want to say year I can't remember for sure
the 23 Me version five but once we get to about a and 90, 000
we're seeing. So, for instance, as we go down through here, we
over to this newer chip and so with your ancestry, you're
chips that Family Tree DNA in my heritage have just started
that. Which is why when we're looking at low overlap were
me and then finally we have a my heritage down here 23 and me
when they went to version five. They used a new kind of chip.
you notice is that hey there's no ancestry in here. There's no
video up here about overlap and what it means or if you want to
was much more similar to that 23 and me chip. So, low overlap
would like to learn more about overlap, you can watch this
means you basically are comparing a different versions
heritage. Those are the older chip that they were using that
so almost 200, 000 that's the ancestry chip compared to the
Family Tree DNA and my heritage are using that are similar to
see that yeah, there's some family tree DNA that are low,
of chip as well. And so they had very little overlap with
Living DNA when they started they were using this new type
of of what it was. As far as I know, ancestry has not switched
version 5 chip or a living DNA chip and some of the newer
almost always looking at something compared to a 23 me
And that chip had very little overlap from their old chips.
family tree DNA. But we have living DNA and twenty-three and
and me version five. As well as some more 23 and mes. But what
old 23 and me version three chip and if we go all the way
to the highest ones not counting the combined there is
super kit which is multiple kits altogether which is why
some my heritage that are low. These are the new chips that
a 23 and me version 3 chip or these are combined this is a
always going to see much higher amounts. About double what
could occur. Typically, we're not looking at a single match
ancestry kits. We're comparing my heritage kits. So for all of
me version five. We have a living DNA. We have another 23
version. But then we start to have clues here. We have 23 and
three kits. And Family Tree DNA with the Family Tree DNA kit.
me kit version 3. Now for those of you who are familiar with
create their database between this one and the Family Tree
overlap. That's just something to be aware of. It's not
77, 000 of overlap 77 snips 77, 000 snips and it goes up to
from low to high that way the NA is not on top there at the
and so the less snips the less your start and end locations
there is less than 90, 000 snips of overlap why would that
that that data was never really captured because they didn't
be important snips help you determine where segments are
the pink highlighted overlap mean? Now, this is a little bit
they had to do with the new uploads when they were building
things but eventually that Genesis site got morphed over
But we're not always doing that. We're comparing them to
number of snips. I think there was 950, 000 snips on this kit.
kit. We have a bunch of 23 and me. It doesn't tell us what
back what we're seeing is we're seeing that NA pretty much just
source. This kit that I have that I'm comparing is my 23 in
bottom I have all of these pink ones here and it's starting at
onto the main site so it became what GED Match was and there
through a lot of different development and at the time,
notice that they match up with some of the time frames we're
looking at some different ways of matching between these
And this is basically one of the ones that GEDmatch used to
about 90, 000 snips and that's what the pink means basically
other information that they provide for you. Let's go on to
different kits to be able to come up with the same reliable
is somewhat important but not as critical as much of the
it would be great if we had that overlap data for all of
has occurred since that change over and so the majority of
upload to the Genesis site. Well, about three years ago or
so and if you're listening to these time frames, you'll
and likewise, twenty-three and me was change their chip from
your matches to see have some of that overlap data. Now, that
database was centered around. Well, over the years, you had
means that this is a much older kit four years so older. And it
in the database that followed the general layout of what the
was uploaded onto the old GEDMatch website whereas the kits
that were uploaded to the old GEDmatch website previous to
website as opposed to the GEDMatch website and then
what they had before to a different version that had a
which very few of them are they were uploaded to the Genesis
these DNA kits the majority of growth on the GEDMatch website
you're comparing a 23 and me with a 23 and me both version
other players, ancestry and my heritage and eventually living
Genesis was take a look at this amount of overlap and so kits
uploads I think it was maybe maybe I'm mistaking some of the
1, 600 as opposed to the 1100 So it looks like there is some
part of their algorithms and so it started capturing that so
this version three was the most comprehensive as far as the
that clue can be found in this next column right here. The
really when we're looking at this data over here let me go
aware of as you're looking at that match that these things
at one time. We're looking at groups of matches together. Now
about the history of GEDMatch comes into play. In other
these low numbers. Remember one of is a 23 and me version three
something necessarily to discount that match but to be
transition period where only Genesis was allowing new
Genesis is going to be where we are going forward. We're going
kits that I can see over here. 500, 000, 400000 300000 this is
all in or and you'll notice hey this drops dramatically whereas
why would these kits have such low overlap below 90, 000? And
years ago or so, GEDmatch created a separate website that
here, there's a nice break tells me where into these other
you could actually upload to the regular site and you could
database had been founded on. In about 2015, 2016, about five
one of the things that you can see is when I sort the overlap
data that they had from the other kits. Now, that went
that have the overlap data if they are more than four years
before I was seeing 1500s2000s and 3000s some cases I'm seeing
eventually everything was uploaded through there so while
seeing. About three years or so ago, they decided that hey,
a couple of thousands but mainly you know below 1000 as
DNA kit. You're going to have your highest overlap when
NAs over on the right side and I'm looking at the age over on
happening here? Well, This is where knowing a little bit
vast majority of these are below 1000. So what is
the left side I'm seeing that most of these kits are four
the new that overlap was important to be able to see as
words, about four, five years ago, GEDmatch had been going
there's some that are more than that 1100. There's one that's
to stop where everything that up is uploaded is going to
three days that this kit has been on there Now, I am seeing
might get more false segments because of the lack of snip
was no old GEDmatch anymore well one of the things that
chromosome. So, that can't be part of what this NA has to do
for segments are going to be and it's possible that you
here at the top. Now, if I look through these NAs, I can see
everything. So, it's not the total amount of shared
of an easy question. I'll just go right back here to the data
the second question related to overlap and that is what does
ran parallel called Genesis and in this website, they were
147, which is just over three years but most of these are are
different set of sniffs. So there was no longer everything
much more including some that are almost you know 10 years
what those look like. We got a lot of NAs on mine. Okay. So,
on and they had been created basically using Family Tree DNA
and 23 and Me data back from 2010 and that's what their
compared in that one-to-one comparison. Which is good
DNA that came into the picture that they had their own chips
need to capture it there was there was no reason to but with
overlap between the overlap NAs if that makes a little bit of
begin with. Overlap is when one company tests ABCDE and another
sense. Overlapping the age but in general, you'll notice the
all up to very large. So, that is not part of it. The XDNA is
automatically be uploaded to both and then there was a
over here, hey, total CMs, well, it spans the whole bit of
probably going to see some of these NAs sprinkled throughout.
these NA kits. So, let me scroll down until I get to
far as the total numbers all the way down to brand new kits
more NAs and you when you're looking at your list are
where some of these number ones are coming up and we'll see
this a little bit to see if we can surmise why some of these
look like they are below that 1, 147 days and that's all of
nine years old or so History and there's none of these that
are NA.
comes to the NAs, what does the NA mean? Well, let me adjust
is what does the NA for overlap mean? Let's go over and take a
years old or more it looks like I see there's one that's 1,
with. I'm going to go all the way over to this very far left
yourself to all the other kits basically to see who your match
even though there may be 600, 000 places that have been
column which is the age that means how long ago was this kit
uploaded so as I'm scrolling down here I'm looking at the
quick let's just do a quick review of what overlap is to
you know, zeroes to big numbers, almost the whole
000 290, 000 200, 000. Then I have a bunch of NAs and some
value. And you can see here I have you know, 500, 000 400,
senorgans. Also, the largest segment spans from very small
overlap column. So, you can see all of the NAs come up right
So, what I've done here is I have sorted this list by the
list is and in particular, there's two questions about
overlap with another company's site and that's what's being
because we're seeing some of these high values but then it
overlapped that they can actually compare to. And so
and put in my kit. On the very last column we have the overlap
company tests CDEF and G and so there's three of those that are below.
Whenever I put out a video about a tool and how to use it,
before. Now, One To Many in GEDMatch is a way to compare
follow-up video on the one to many videos that I've had
tested from your test only two hundred or 400, 000 of them
And you might be wondering okay what does that mean? Well real
look in GEDmatch here. I've gone to the one to many tool
overlap that I want to cover today. Now, question number one
there's always going to be some questions. So, this is a