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Peppered moth, carbonaria type on the left, and typica on the right. Kettlewell's experiment was a biological experiment in the mid-1950s to study the evolutionary mechanism of industrial melanism in the peppered moth (Biston betularia). [1][2] It was executed by Bernard Kettlewell, working as a research fellow in the Department of Zoology ...
Henry Bernard Davis Kettlewell (24 February 1907 – 11 May 1979) [ 1] was a British geneticist, lepidopterist and medical doctor, who performed research on the influence of industrial melanism on peppered moth ( Biston betularia) coloration, showing why moths are darker in polluted areas. This experiment is cited as a classic demonstration of ...
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. The frequency of dark-coloured moths increased at that time, an example of industrial melanism. Later, when pollution was reduced, the light-coloured form again ...
[36] [37] Majerus's works clearly vindicated the experiments on peppered moth evolution, and the paper concluded that: The new data, coupled with the weight of previously existing data convincingly show that 'industrial melanism in the peppered moth is still one of the clearest and most easily understood examples of Darwinian evolution in action'.
The experiments with the peppered moths, as described in this book, are arguably the most dramatic and best known case of adaptive evolution.For many people at that time, this was the first evidence that they could see evolution taking place in the world around them, and could see how fast evolution can go since Darwin came up with the hypothesis (Kettlewell, 1959).
The peppered moth (Biston betularia) is a temperate species of night-flying moth. [1] It is mostly found in the northern hemisphere in places like Asia, Europe and North America. Peppered moth evolution is an example of population genetics and natural selection. [2] The caterpillars of the peppered moth not only mimic the form but also the ...
Ford was the supervisor of Bernard Kettlewell during Kettlewell's famous experiments on the evolution of melanism in the peppered moth, Biston betularia. The entomologist Michael Majerus discussed criticisms that had been made of Kettlewell's experimental methods in his 1998 book Melanism: Evolution in Action. [22]
Between 1953 and 1956, the geneticist Bernard Kettlewell experimented on peppered moth evolution. He presented results showing that in a polluted urban wood with dark tree trunks, dark moths survived better than pale ones, causing industrial melanism , whereas in a clean rural wood with paler trunks, pale moths survived better than dark ones.