I am not a racist. I've been harbored by all nationalities. Except a Brit.

And, no, there's nothing that even comes close to being evidence as our genes being altered by aliens. Except, maybe, a voice box. There are foreign materials and uncomprehendable happenings, things carried by meteors, things we find in space (on our own), and lots of things to make me believe in aliens, including the fact that I saw a UFO.