Re: Projection much?
Unless DNA can be magically sourced from somewhere else, that must mean that you have 3.125% of each 4-th-grandparent's DNA. (I'm ingoring mutations, but those are just statistical noise at this level.)
I'm not buying that you lose 25% of parental DNA each generation. It doesn't make sense. Seems like someone misinterpreted something that then got quoted and no one's asking for sources.