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6/7/09
There is remarkably simple yet clear proof that no animal species can substitute
as a reliable biological model for another species. A species is defined
in terms of its reproductive isolation, meaning that members from different
species cannot interbreed. This is because a given species has its own unique
genetic make-up (from number, organisation and structure of chromosomes,
through to regulation and control of gene expression). Modern biology has
clearly demonstrated that the genetic make-up of an individual determines
the precise biological activities of its cells, tissues, and organs. Hence,
individuals from different species have different genetic make-ups and therefore
display different biological activities, even if some appear similar in
the short term. The statement that members of a given species can substitute
as reliable biological models for other species is therefore invalid.
http://www.antidote-europe.org/ptscomplet_gb.htm
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