Getting billions of people to stop eating meat isn’t very realistic, so some have put their hopes in lab-grown steaks made from stem cells.
Explaining this sort of phenomenon by slight, successive modification, as Darwin envisaged, seems problematic.
It is flat-out unreasoning — and in my view, anti-human.
“Incredible videos showing cellular movements during development of mouse embryo.”
About the movement of organelles: There are molecular motor proteins that haul them around!