02 June 2015

Looking At How The X Chromosome Is Passed Down

I have been doing more research and learning about how to use DNA to try and find relatives. The specific part that I have been looking at concerns how the X chromosome is passed down from generation to generation. The X chromosome is NEVER passed from Father to Son. It can be passed Father to Daughter, Mother to Daughter or Mother to Son. Again it is never passed from Father to Son. This narrows down which lines you will look at in trying to find the match for someone who you match on the X chromosome. There are some good charts and information on DNA - Genealem's Genetic Genealogy Blog. I downloaded her graphic for the female being the 1st person on the chart and filled it out with the names of the ancestors I know. Below is that fan chart filled out with my ancestors that could have passed an x chromosome to me.

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