"The President has signed into law the Genetic Information Nondiscrimination Act (GINA) that will protect Americans against discrimination based on their genetic information when it comes to health insurance and employment."
Genetics is only one factor of your appearance - believe it or not, your environment, lifestyle, and upbringing factor in heavily.
http://www.nytimes.com/2015/02/24/science/building-face-and-...
You're right of course, there is a lot more to appearance than genetics, but these approximations do exist now, and will get better. jakeogh's litter example is closer to reality than he probably intended, which just shows how fast this technology is coming along.
> Nonetheless, the police in Columbia, S.C., last month released a sketch of a possible suspect. Rather than an artist’s rendering based on witness descriptions, the face was generated by a computer relying solely on DNA found at the scene of the crime.
The point about genes vs environment/expression is right on, I assumed it was common knowledge and therefore implied.