Industrial melanism is a term used to describe the evolutionary process, in which darker individuals come to predominate over lighter individuals. Since, the industrial revolution as a result of natural selection. Until $1848,$ almost every individual of peppered moth

(Bistonbetularia) captured in Great Britain had light-coloured wings with black specklings. In $1848,$ a black form of moth was recorded in

Manchester and by $1895,98$ of the peppered moth population in Manchester was black. This black melanic form arose by a recurring random mutation.