DATA-DOG, the subject we're discussing at the moment, the mouse study, concerns epigenetics, that is, the passing on of the "switched" nature of genes (whether they express or not). It's not related to the general subject of evolution or the subject of which genes are passed on to one's descendants.
Of course we all contain traits from not just our parents, but traits which are found in, say, an uncle or a grandmother which are not evident in our parents. So clearly we are not just a product of the precise traits that our parents possessed, but also other traits which are circulating in our family's gene pool. In that sense we can't expect that two physically exceptional parents will have nothing but exceptional children.