Improvement of Inherited Human Traits
The potential to alter genes to build better athletes was immediately realized with the invention of so-called "Schwarzenegger mice" in the late 1990s. These mice were given this nickname because they were genetically engineered to have increased muscle growth and strength (McPherron et al., 1997; Barton-Davis et al., 1998). The goal in developing these mice was to study muscle disease and reverse the decreased muscle mass that occurs with aging. Interestingly, the Schwarzenegger mice were not the first animals of their kind; that title belongs to Belgian Blue cattle (Figure 1), an exceptional breed known for its enormous muscle mass. These animals, which arose via selective breeding, have a mutated and nonfunctional copy of the myostatin gene, which normally controls muscular development. Without this control, the cows' muscles never stop growing (Grobet et al., 1997). In fact, Belgian Blue cattle get so large that most females of the breed cannot give natural birth, so their offspring have to be delivered by cesarean section. Schwarzenegger mice differ from these cattle in that they highlight scientists' newfound ability to induce muscle development through genetic engineering, which brings up the evident advantages for athletes.
Genetic testing also harbors the potential for yet another scientific strategy to be applied in the area of eugenics, or the social philosophy of promoting the improvement of inherited human traits through intervention. In the past, eugenics was used to justify practices including involuntary sterilization and euthanasia.
Preimplantation genetic diagnosis may be perfected and could technically be applied to select specific nondisease traits (rather than eliminate severe disease, as it is currently used) in implanted embryos, thus amounting to a form of eugenics.
Because the technology needed for trait selection is not yet available this is purely hypothetical. In fact, such technology may be impossible, considering that most traits are complex and involve numerous genes.
To answer your question Mechapixel, there is no such thing as 'more evolved'; but there are favorable mutations.