Louis Pasteur showed that what appeared to be life springing forth from nonliving matter was actually life emerging from exceedingly small living organisms.
Richard Dawkins predicted that “a large fraction” of our genomes has no function, because, “The true ‘purpose’ of DNA is to survive, no more and no less."
The re-usage of highly similar and complex parts in widely different organisms in non-treelike patterns is best explained by the action of an intelligent agent.