Exactly which is why this view is absurd. There's no real connection or continuity, our race is our kin. We have familial bonds, clans etc all for thousands of years. We are not simply the sum of quantifiable genes, we are an organic people that have connection to each other.

A lab-grown clone or a genetically modified human that shares 100% of our genetic traits but has no organic connection to us is an outsider. The individualist, liberal, empiricist view is just as bad as IQ nationalism. To be part of our race you must be born of our race, genetically modified strangers, clones and whatever else are not part of the organism.