DNA could be a 'universal constant'

Humans and aliens may share the same DNA which could be part of a 'universal structure', according to researchers. The building blocks of life exist in low temperatures and low pressure meaning they are far more likely to flourish than if they were more complex. [I had a physics teacher in college forty-some years ago who alluded to much the same principle.] Compare Urantia Paper 49 There are great differences between the mortals of the different worlds, even among those belonging to the same intellectual and physical types, but all mortals of will dignity are erect animals, bipeds. [Brought to Mindful's attention through Google news feed for "Urantia," which brought up this article thanks to a mention by commenter FizViz, Brighton UK. Fiz is a bit vague in this comment. But, thanks!]