In this paper I bring together two contexts in which the term “gene” is used: an evolutionary context (“unexpressed genetic variation”) and one from a developmental context (“constructed functional gene”). Thus evo-devo. The twist that Mary Jane West-Eberhard‟s Developmental Plasticity and Evolution (Oxford, 2003) brings is that sometimes environmentally-induced phenotypic variation can take the lead in evolution. Hence it‟s now “eco-evo-devo.”