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grannymh
Guest
From reading 1994-95 papers of Francisco J. Ayala, it is easy to see that whatever group amount is needed to prove a genetic connection does not automatically exclude the possibility of a single couple as parents of a new, distinct species. This is due to methods used to provide assumed data for the experimental simulated populations. In other words, it is impossible to predict backwards millions of years as to what every single individual was doing as either a part of the Multiregional Theory or Out of Africa theory. (Note: Multiregional Theory may be making a come back due to new possibilities.)If the source for the original statement actually says that, it is quite a leap of logic. Showing common ancestry to a group a ~1000 in no way precludes common ancestry to a single couple. I smell somewhere the subtle faith-debunking false dichotomizing which gives legitimate scientific inquiry on the topic a bad name.
Regarding the mutations of genes, the same kind of problems exist due to the amount of genomic data being studied and the functions of the involved genes. All this is in the light of adaptations made to the original Wright-Fisher model and the challenges to the molecular clock. In other words, the coalescence theory may work with only certain ancient genes provided that all alleles present in an extant pool would have descended from a single allele which in turn needed a large hominid population in order to exist. The assumptions of a mean population size and a long-term generation time of 15 years, would not preclude other assumptions especially when it comes to evaluating effects of possible bottlenecks and/or founder theories over several million years.
As one of the early research papers states: “We have explored how small the population bottlenecks would be by computer simulations.” Later it states: “The conclusion follows that human ancestral populations could never have been smaller than two or three thousand individuals at any time over the last several million years.” Several million years sounds impressive until one realizes that there is no substantial evidence that these ancestors were true, fully complete human persons with the same human nature as you and me which we inheritied from… There is a difference between a highly developed sentient non-human animal and a rational human with intellect and will.
Blessings,
granny
Human nature is sacred because it is an unique unification of spirit/matter, rational/corporeal, soul and body.