It is apparent that not too many, maybe none, are aware of criticisms of NeoDarwinism, to be hereafter referred to as Darwinism or ND, among front loaders and esteemed scientists like Grasse, etc,..... I use those terms rather than "evolution" because these men all accepted common descent. Behe and some IDers accept common descent as well but are not generally considered "evolutionists." I hope the terminology brings some clarity.
I will discuss 2 papers in 2 posts. The first is from the year 2000 and refers to 4 papers from1984, 1987 1993 1998 by the same author, John Davison who is now a retired professor, and prominent scientists from earlier times.
http://www.uvm.edu/~jdavison/ontogeny.html
Although his hypothesis of a mechanism for macroevolution may not be correct, I think he was looking in the right direction. Since then, there has been some emphasis on epigenetics and focus as well on gene regulation. My purpose is to focus more on the weakness of ND.
Note the comment on information "already present in the genome"; hence front loading.
He makes an interesting comment which is bolded.
Here, in the bolded section, he predicts front loading.
He goes on to cite specific features of organisms as support for preformation. For brevity's sake, I won't quote them but trust those interested will read for themselves. Note one comment mentioning 2 scientists that came to same conclusions:
Parallel evolution driven by internal factors not the environment.
Hopefully, some will see here a specific prediction of a front loaded genome. Obviously, the paper is too short to lay out all the arguments and details, but hopefully it introduces the idea to some here. Next post will be another more recent paper by Davison.
I will discuss 2 papers in 2 posts. The first is from the year 2000 and refers to 4 papers from1984, 1987 1993 1998 by the same author, John Davison who is now a retired professor, and prominent scientists from earlier times.
http://www.uvm.edu/~jdavison/ontogeny.html
In 1984 I presented the semi-meiotic hypothesis of organic evolution.
This was followed by three other papers which exposed the complete
failure of virtually every aspect of the Darwinian model (Davison 1984
1987 1993 1998). Incorporating the conclusions of Otto Schindewolf
(1896-1971), Richard B. Goldschmidt (1878-1958), William Bateson
(1861-1926), Robert Broom (1866-1951), Pierre Grassé (1895-1985)
and Leo S. Berg (1876-1950), the semi-meiotic hypothesis can be
summarized as follows. Macroevolution is largely finished.
Although his hypothesis of a mechanism for macroevolution may not be correct, I think he was looking in the right direction. Since then, there has been some emphasis on epigenetics and focus as well on gene regulation. My purpose is to focus more on the weakness of ND.
The essential feature of these changes was due not to micromutations
in the genes themselves, but rather to the way in which those genes
express their effects which is dependent upon their arrangement within
the structure of the chromosome (position effect).
Note the comment on information "already present in the genome"; hence front loading.
Such a mechanism does not depend on the production of new information
but rather on information already present in the genome i.e.
preformed. ...
It should also be noted that Schindewolf (1993), Goldschmidt (1940),
Berg (1969) and Grassé (1973) all subscribed to preadaptation
(preformation) during evolutionary change.
He makes an interesting comment which is bolded.
When something is lost during evolution it is rarely replaced.
Examples are the loss of limbs in reptiles and amphibians, or digits
in many tetrapod vertebrates. Returning to the swim bladder example,
the darters, tiny members of the perch family of fishes, have lost the
swim bladder, a loss which allowed them to successfully invade swiftly
flowing freshwater streams. The Darwinian view would be that this
was an adaptation to the stream environment. An alternative view
would be that, having lost the swim bladder, the darters sought out
or perhaps simply stumbled into the stream environment where they
would have a clear advantage over buoyant competitors. Also the
Darwinian interpretation would suggest that the swim bladder was
gradually reduced, yet there is no evidence whatsoever for that
assumption. It would seem that many evolutionary specializations
occur instantly without intermediate forms. Thus, just as ontogeny
goes forward in epigenetic fashion, so has evolution. The two
processes also share irreversibility as a cardinal feature.
Here, in the bolded section, he predicts front loading.
In short, I propose that the information
for virtually all of evolution may have been present from very early
in the onset of that process. I realize that this idea may seem
ludicrous at first glance, yet it remains compatible with an enormous
number of otherwise enigmatic observations from comparative biology.
It also avoids postulating Lamarckian devices for which no evidence
has been forthcoming.
He goes on to cite specific features of organisms as support for preformation. For brevity's sake, I won't quote them but trust those interested will read for themselves. Note one comment mentioning 2 scientists that came to same conclusions:
Considerations like these and many others prompted
Leo Berg (1969) to conclude: "Evolution is in a great measure an
unfolding of preexisting rudiments."
The same view was independently offered by Pierre Grassé (1973):
"The existence of internal factors affecting evolution has to be
accepted by any objective mind."
Parallel evolution driven by internal factors not the environment.
Rather than assuming independent inventions of these remarkable
parallels, it seems to me more reasonable to postulate these events
resulted from the activation (derepression) of an enormous yet clearly
limited stockpile of potentialities which were available when those
events took place.
These considerations cast a whole new perspective on what has been
called convergent evolution. The morphological similarities that
exist, especially in the skeletal systems, between placental wolves
and bears and their marsupial counterparts, to my mind, defy any
explanation based on the accidental evolution of these similarities
through chance events. Thus, what has been described as convergent
evolution is not that at all but the expression from preformed sources
of virtually identical morphologies.
Hopefully, some will see here a specific prediction of a front loaded genome. Obviously, the paper is too short to lay out all the arguments and details, but hopefully it introduces the idea to some here. Next post will be another more recent paper by Davison.