Um, so? Of course modern evolutionary theory, being a theory of universal common descent, requires the denial of "spontaneous generation": the theory that life comes into existence from non-life as a regular phenomena in nature rather than, say, as a unique result of some process of chemical evolution or the like.
Obviously if life is continually, or even intermittently, coming into existence spontaneously then all living organisms will not share a common ancestry.
"Um, so?"
Exactly the point. Committed naturalists get to ignore all of the work done to date in favor of preserving their belief that 'something' will be found to save them.
"Of course modern evolutionary theory, being a theory of universal common descent, requires the denial of "spontaneous generation": the theory that life comes into existence from non-life as a regular phenomena in nature rather than, say, as a unique result of some process of chemical evolution or the like."
I was not talking about 'regular spontaneous generation of life'. I was talking about a 'single spontaneous generation of life'. Are you saying that 'modern evolutionary theory' denies a single spontaneous generation of life?