, Volume 27, Issue 6, pp 903-918
Date: 21 Jul 2012

Varieties of parity

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Abstract

A central idea of developmental systems theory is ‘parity’ or ‘symmetry’ between genes and non-genetic factors of development. The precise content of this idea remains controversial, with different authors stressing different aspects and little explicit comparisons among the various interpretations. Here I characterise and assess several influential versions of parity.