Evolution

In the industrial regions of England, a light-coloured peppered moth Biston betularia typica gave rise to a dark melanic species Bision betularia carbonaria by change of colour through a dominant mutation in a single gene. Due to industrialisation, barks got covered by smoke so these dark coloured black moths escaped unnoticed by predators and thus managed to survive resulting in more population as compared to light coloured moths. This event of industrial rnelanism in moths has been originally studied by R.A. Fischer and E.B. Ford; and in recent times, by H.B.D. Kettlewell.