This seems like a reasonable discussion of the issue: http://gcbias.org/2013/11/...

		maxerickson on April 5, 2014 \| parent \| context \| favorite \| on: Rare 'goat-sheep' born on Irish farm This seems like a reasonable discussion of the issue: http://gcbias.org/2013/11/11/how-does-your-number-of-genetic... After ~15 generations your genealogical ancestors aren't all that likely to have contributed much to your DNA.