Originally Posted by bcruiser
What about the time line, (relatively) recent time or ancient time? Because that can sway the other part of your post. v
They may have seeded all lifeforms on chosen planets or just humanoids.
On the screen, RS did leave it up to interpretation.
It's a hard one to call....
On one hand, for us humans very little of our DNA is unique to our species.
IIRC, our closest relative, the chimp, has > 95% our genes.
In addition, we primates are but a branch of the mammalian family, meaning we are connected to all mammals at some point.
When you take all of that into account, you could make the argument the "sacrificed" Engineer was the basis for all terrestrial life as we know it.
And life on earth has been around for ~ 3.5 billion years (Wikipedia).
OTOH, if the Engineer "seeding" gave rise to only humans, it creates a quandary of trying to explain the fossil and DNA evidence/record of human evolution.
My head hurts while contemplating that...I'll leave it others to speculate.