Wednesday, December 21, 2011

Charts for Genetics

The Charting Companion Descendant and Outline Descendant charts provide some interesting genetic options: Y-chromosome and Mitochondrial. Both are useful for tracking the inheritance of genetic traits, passed on from ancestor to descendant.

Here is a chart of all the members of a family. The males are colored blue, and the females pink:
All the descendants
The Y-chromosome option shows all the male descendants who inherit this chromosome which determines gender. The Y chromosome can be used to determine paternity.
Y-chromosome - male descendants

The Mitochondrial option shows the female descendants who pass on the mitochondrial DNA to their daughters, and the sons who inherit, but do not pass it on:
Mitochondrial - female descendants (transmit), male (carry)
Unlike the other chromosomes that can recombine, The Y-DNA and Mitochondrial both pass down unchanged except for mutations, which makes them valuable for research and genealogical identification.

Tell the story of your family genetically!


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