Ancient Aliens: proof of aliens in our DNA?

This clip from HISTORY’s Ancient Aliens asks whether human DNA could hold evidence of extraterrestrial origins. The question is framed within the series’ controversial theory that extraterrestrials have visited Earth for millions of years.

The focus is the possibility of finding signs of an alien connection in human DNA. The clip raises the idea for consideration; it does not establish that extraterrestrials influenced human DNA or that such evidence has been confirmed.