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The goal of lab exercise described in this paper is to provide biology undergraduate students with research experience comparable to graduate studies but performed during regular lab sessions. Working on regular weekly 3 hour lab projects, students dedicate a portion of time to do continuous experiments on butterfly wing pattern formation. In that way students are capable to generate experimental results superior in comparison to regular lab projects. Procedure which is stretched across several weeks includes observation of butterfly growth and metamorphosis, cold shock experiments and pupae injections with sodium tungstate, chemical which alters wild type colour patterning through the modification of cell signals. Furthermore students learn how to spread specimens, photograph them, and do comparative analysis of wild type and altered colour morphs of Painted Lady with other butterfly species from the same genus. In that way students compare induced polyphenism with the actual evolution of colour patterns, getting familiar with evodevo paradigm.