VMartin
Posts: 525
Joined: Nov. 2006
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German scientist Theodor Eimer was a proponet of a directed evolution or orthogenesis. His works are somehow unaccessible via internet even though reading them would be very intresting I suppose. I hit on the page describing his concept of "undulatory development". Especially noticeable is the last sentence about Eimer's law of posterior-anterior development which has obviously nothing common with darwinism:
http://links.jstor.org/sici?si....rgePage
Because he is decribing the color patterns of common European lizard the issue is connected with coloration of animals discussed in the thread "coloration of fungi". Obviously Eimer's explanation of development of coloration of lizards is independent from natural selection and is due to some "internal forces" - it would help if somebody has access to the all article btw. It could provide an explanation to your questions what is behind coloration of animals if (neo)darwinism is unable to explain it in many cases .
Anyway orthogenesis as theory is more related to this thread so I put it here.
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I could not answer, but should maintain my ground.-
Charles Darwin
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