Arguably the scariest alien race ever created in cinematic history, the Xenomorph, has the ability to inject its DNA into almost any host.  This allows the species to create a deadly version of itself from any nearby life form.  The truly terrifying reality is that nature has created most of the Xenomorph’s abilities already, including  DNA injection, bursting offspring, acid defense system, and even double mouths!  Listen as The Brain Trust explains just how possible these creatures are to reproduce.