What Does This X DNA Match Mean?

It helps select family lines to consider

The inheritance patterns for the X chromosome for males and females is different.Men inherit only one X chromosome, from their mother, while women inherit two Xs, one from their mother and one from their father.In turn, their parents inherited their X in a specific way as well.All ancestors donít contribute to the X chromosome. See this link for a really decent primer on X-DNA.

The chart below shows how I (and my brothers, my father) inherit X-DNA.You can see it only comes via specific ancestors.So those are the lines to explore if we have an X-DNA match.

 

X-Match for John McGing

 

 

Male X-DNA Inheritance paths

 

This is what an X-DNA inheritance line looks like for my sisters and my mom.There are of course a lot more lines where the X-DNA can come from but there are ones where it canít.By looking at the X-DNA between siblings, it can be possible to determine if a match is on momís side, dadís side or maybe they share a common ancestor and what lines to ignore.

X-Match for Maureen McGing Dunn

 

 

Female X-DNA Inheritance paths

 

Last updated March 27, 2018

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