by Carl Wieland. Goodbye, peppered moths A classic evolutionary story comes unstuck . It is a fascinating story about how, due to a combination of environmental changes and selective predation, a moth turned into, well, a moth. There are two main problems with peppered moths story. Do Peppered Moths Prove Evolution? Peppered Moth. The caterpillars of the peppered moth not only mimic the form but also the colour of a twig. The frequency of dark-coloured moths increased at that time, an example of industrial melanism. But, are peppered moths really evidence of evolution? BY JOHN D. MORRIS, PH.D. * | FRIDAY, APRIL 01, 1994. The peppered moth case study described above is an example of directional selection: the frequency of color varieties changes dramatically in one direction or another (lighter or darker) in response to the predominating habitat conditions. The evolution of the peppered moth is an evolutionary instance of directional colour change in the moth population as a consequence of air pollution during the Industrial Revolution. Peppered moth evolution is an example of population genetics and natural selection.. cows of evolution: the peppered moth. Darwin's book Origin of Species, published in 1859, proposed the concept of evolution by purely naturalistic causes, especially natural selection. The ‘textbook story’ of England’s famous peppered moths (Biston betularia) goes like this.The moth comes in light and dark (melanic) forms. It is not as though a change in the peppered moth coloration is any kind of evidence for how the moths evolved, or how any other species, for that matter, could have evolved. Peppered moth, (Biston betularia), species of European moth in the family Geometridae (order Lepidoptera) that has speckled black-and-white wings. Researchers suspected that natural selection was the reason why, and they tested that idea by putting dark and light moth … A dark form of peppered moths, once rare, became common. since the industrial evolution started the tree's started to go black, then the pale moths got constantly eaten by birds. In an iconic evolutionary case study, a black form of the peppered moth rapidly took over in industrial parts of the UK during the 1800s, as soot blackened the tree trunks and walls of its habitat. The story of the peppered moth has been set forth for decades as the prime example of evolution in action. The peppered moth (Biston betularia) is a temperate species of night-flying moth. It is a fascinating story about how, due to a combination of environmental changes and selective predation, a moth turned into, well, a moth. During the industrial evolution the pollution effected the white tree's in Britain, the moths would hide on pale tree's because they pale themselves. 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