Wired sat down with Tabula Rasa's Lead Designer, Paul Sage, and spoke with him about the games newest feature; Hybrids. Here is a sample of what he had to say...
Access to the alien DNA is gained by completing 3 race-specific missions, but you'll have to be at least level 15 to tackle the Forean missions, which are the first. Level up a bit more and you can take a whack at the Brann missions, then later, the Thrax.
You can read the entire interview over at Wired.