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| Science Forum Index » Bio Evolution Forum » The Taming Of The Fox: a heritable epistatic fitness... |
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| John Edser... |
 Posted: Fri Oct 23, 2009 5:25 am |
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The website below is quite comprehensive.
http://cbsu.tc.cornell.edu/ccgr/behaviour/History.htm
This long term study produced tame foxes from wild foxes in just ten
years by artificially selecting for tame behavior (a complex trait). An
unexpected result was that many other dog like traits also became
apparent such as floppy ears, bushy tail, color fur patches and thiner
bones. It appears that the selecting for tame foxes pushes the juvenile
fox form into fertile adulthood (neoteny).
http://en.wikipedia.org/wiki/Neoteny
The tame foxes were empirically selected via their relative Total
Darwinian Fitnesses: the total number of fertile forms reproduced per
parent fox per population. Each TDF had to be compared to provide each
selective event. The net result: epistatic (non additive) gene groups
were selected providing an amazingly fast evolution.
Using the slow plod Neo Darwinian paradigm each gene change has to be
supposed to be selected individually using Fisher and Haldane's
oversimplified additive fitness per gene per genome model. This was only
because it remains assumed that all epistatic gene fitnesses must be
destroyed by meiosis. Given the modern view of the genome where most
species share overwhelmingly the same set of genes and DNA groups may be
endlessly duplicated, why does Fisher's outdated notion of an inherited
but non heritable genetic epistasis persist?
Regards,
John Edser
Independent Researcher
edser at (no spam) ozemail.com.au |
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