Editing Peppered moth (section)

== Genetic basis of melanism==
The evolution of the industrial melanism mutation has been shown to be due to the insertion of a transposable element into the first intron of the ''cortex'' gene, resulting in an increase in the abundance of the ''cortex'' transcript, which is expressed in developing wings.<ref name="van’t Hof et al, 2016">{{cite journal |title=The industrial melanism mutation in British peppered moths is a transposable element |author=Arjen E. van’t Hof, Pascal Campagne, Daniel J. Rigden, Carl J. Yung, Jessica Lingley, Michael A. Quail, Neil Hall, Alistair C. Darby & Ilik J. Saccheri |year=2016 |journal=[[Nature (journal)|Nature]] |volume=534 |issue=7605 |pages=102–105|doi=10.1038/nature17951 |pmid=27251284|bibcode=2016Natur.534..102H }}</ref>