Over time, these “pre-split” lineages, themselves, evolved into the new additional versions present today.Because each individual carries only two versions of a gene, a single founding pair could not have passed on the thirty-two versions that Ayala claimed existed some seven million years ago—either at that time or at any time since.By calling the story a “myth,” people avoid saying it is mere “fantasy,” that is, with no foundation in reality at all.While rejecting a literal first pair of human parents for all mankind, they hope to retain some “deeper” truth about an original “sinful human condition,” a “mythic” meaning.Irrational animals, including subhuman primates, are capable of complex sentient behaviors often approaching or imitating the rational activities of true man.But an animal either possesses a spiritual, intellectual soul or not.Still, the technical concept of average effective population size estimates should not be confused with an actual “bottleneck” (a temporarily reduced population) which may be much smaller.
Before that time, all subhuman behavior manifests merely material sensory abilities.
Such calculations rely upon many assumptions about mutation rate, recombination rate, and other factors, that are known to vary widely.
All of this entails retrospective calculations about events in the far distant past, for which we have no directly verifiable data.
Molecular biologists use computer models in an attempt to validate such hypotheses and reach conclusions about genetic conditions in early primate populations.
In this process, some researchers have committed the logically invalid move of inferring from particular data to the universally negative claim that a literal Adam and Eve is impossible.