that you can find out about upcoming Econferences that
give it a thumbs up so they can reach more viewers. Be sure to
normally on autosomal DNA, you'd have to figure out which
thing and that is you have to understand the difference
trees and you gotta remember to keep that separate so that you
benefit because you only have to look at eight lines. So, you
between males and females when it comes to XDNA matching and
XDNA. So, if you have any questions about how you can use
check out our website WWW dot Family History Fanatics. com so
can eliminate the most possible people and also be able to find
different inheritance patterns when you're looking at your two
female, you still get a good benefit. Only 21, less than a
one is where you're related to but with that XDNA match, if
is an excellent elimination tool. Now, the fifth principle
who you could possibly match up with because that inherited
look at five lines and if you're female, you still get a
pattern is different. If you have a match and you're female
third of all of the potential fourth grade grandparents that
grandparents. So, your fifth cousins which is pretty
is something I've actually talked about through this whole
you're male, you only have 13 less than a quarter of the
you have to look at to find how that relationship is. So, XDNA
We'll try to help you out. If you like this video, be sure to
matches that you have autosomal matches with as well using your
match to. You have 6-4 and this will be your fourth grade
XDNA in your genetic research, put it in the comments below.
grandparents and so with an autosoma match, you might have
better the further back you go. Now, looking at six
only have to look at a third to half of all the possibilities
your great grandparents, your great great grandparents. This
and that XDNA matches with a male, then you're using two
different. Let's use a couple of examples. So, if we are four
generations back. So, your parents, your grandparents,
when you're looking at XDNA, make sure you're focusing on
the inheritance patterns, every male in the line takes away the
would be third cousins. You have 16 great great
the number of ancestors you actually have to look at is
to look through 16 different lines to try to figure out
which one is who you are related through. However, if
total fourth grade grandparents that you have to look at
because you've eliminated all the others and if you're
with an XDNA match and that's at four generations. It gets
your tree. So, if you do have a match on autosomal DNA that you
distant. You have sixty-four fourth grade grandparents that
you're male because of all the people that you can eliminate
those that you also share some autosomal DNA with. Now, the
XDNA from before them for males and that can eliminate a lot of
you're not going to be able to determine how you're related so
also have an XDNA match, if you are male or if you are female,
genealogical DNA testing is going to provide a good solid
tells you who you don't need to go and look at. As you saw from
generations, this is about the extent of where autosomal DNA,
fourth principle is XDNA is an excellent elimination tool. It
that you didn't inherit any XDNA from, you only have to
different ways and you're only dealing with one chromosome so
autosomal DNA batch that match is probably distant enough that
chromosome here so we can't use that assumption so principle
can't use a table of percentages to estimate back
but on an individual basis we're just dealing with one
inheritance exactly now with females they do inherit 50% of
population on average yeah it's going to follow that 50% ratio,
how many generations you are because your lines follow
to eliminate any chance of receiving DNA from the male
one chromosome we don't actually follow this 50%
that same full chromosome from their paternal grandmother. Now
important when we're looking at any matches that involve XDNA.
number three is if you have an XDNA match without any
receives slightly different inheritance of XDNA and that's
there's not enough to keep that 50% overall now over a whole
grandparent or great great grandparent is really dependent
beyond that, the amount of XDNA that you receive from any great
or four segments or it may just give you one segment. So, you
you large chunks or small chunks. It may give you three
on recombination and that is a random process that may give
and a full chromosome from their mother. They also receive
his XDNA from his mother. So, that paternal line no longer
So, principle number two because we're only looking at
because they receive a full chromosome from their father
their XDNA from their father and 50% from their mother
line. So, for instance, the father of a daughter only got
each generation beyond that, just like with males, you start
different generations. So, with females, they have two X
what we saw on the male side. So, each one males and females
has any XDNA being contributed to that granddaughter.
Likewise, on the mother side, this pattern is the same as
grandmother and the other side has 25% coming from each
it comes from each grandparent on average and then, as you go
the father, 50 percent from the mother but as you go back in
very similar to autosomal DNA where you would expect 50% from
and one X chromosome from their mother and so it is starts out
chromosomes. They receive one X chromosome from their father
grandparent. This pattern continues on throughout the
the next generation back, one side has 50% coming from the
can see that all of the XDNA is coming from the mother's side
grandfather, your great grand grandfather, that also is going
and every time there is a male in the lineage so with your
side, 100% of it comes from the mother which means that 50% of
received DNA from because you don't. So, XDNA from the male
to eliminate some of those people that you could have
get their XDNA is going to be different. So, let's take a
chromosome from our mother. So, if you start right here, you
going to go over them today. So, principle number one is our
Y chromosome for our father which means we get the X
inheritance patterns are different. How may and females
males, we have an X chromosome and a Y chromosome. We get the
look at how males and females inherit their XDNA. So, for
research and what limitations it actually has. So, there are
five principles that I want you to remember about XDNA and I'm
and how we could use the X chromosome to help us in our
segment of DNA. Today, I wanted to talk about the X chromosome
Howdy, I'm Andy Lee with Family History Fanatics and this is a comes to DNA, does X really help us any?
We learn from pirates that X marks the spot but when it
we're going to be a part of.