system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: How can you reliably recreate a person's face from DNA?

Talking about artists recreating people's faces in a way that you could recognise that person from them. It's been in the news a few times.
gpt
You can't. You can predict the ethnicity, and a few vague measurements. It is still difficult. That is why you see them only *sometimes*. Else crime fighting would be slightly *less difficult*. Instead looking for clues they can just look for DNA, which can give a face that can be searched easily. 

It is still not reliable and work only on the known parts of genes. There is a reason artists are working on it and not scientists. There is a lot subjective information that goes into developing the face from genes alone.

The artists, rely on certain markers. A person's ethnicity can be deduced (almost accurately, if there are no mixed ethnicities). Then the *most probable* eye color, probably skin color. The artist extrapolate on such vague points, then apply what they know. 

(I simplified, probably a bit too much).