Model organisms in evo-devo: promises and pitfalls of the comparative approach
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Evolutionary developmental biology (evo-devo) is a rapidly growing discipline whose ambition is to address questions that are of relevance to both evolutionary biology and developmental biology. This field has been increasingly progressing as a new and independent comparative science. However, we argue that evo-devo’s comparative approach is challenged by several metaphysical, methodological and socio-disciplinary issues related to the foundation of heuristic functions of model organisms and the possible criteria to be adopted for their selection. In addition, new tools have to be developed to deal with newly chosen model organisms. Therefore, we present a modelling framework suitable to integrate data on individual variation into evo-devo studies on new model organisms and thus to compensate for current idealization practices deliberately suppressing variation.
KeywordsEvo-devo Model organisms Extrapolation Idealization Modelling Epigenetic landscape Individual variation Genotype-phenotype mapping Evolvability Developmental plasticity
We thank Staffan Müller-Wille, Philippe Huneman, and an anonymous referee for constructive comments on earlier versions of this paper. The material of this paper was presented at the ‘Second European Advanced Seminar in the Philosophy of the Life Sciences: in vivo, ex vivo, in vitro, in silico – Models in the Life Sciences’ (2012) hosted by the Brocher Foundation, Geneva. JB: Financial support from the Ruhr University Research School (RURS) is gratefully acknowledged.
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