![]() ![]() By the end of the 19th century it almost completely outnumbered the original light-coloured type (var. After field collection in 1848 from Manchester, an industrial city in England, the frequency of the variety was found to have increased drastically. carbonaria) was rare, though a specimen had been collected by 1811. The dark-coloured or melanic form of the peppered moth (var. In 1978, Sewall Wright described it as "the clearest case in which a conspicuous evolutionary process has actually been observed." Industrial melanism in the peppered moth was an early test of Charles Darwin's natural selection in action, and it remains a classic example in the teaching of evolution. Later, when pollution was reduced, the light-coloured form again predominated. The frequency of dark-coloured moths increased at that time, an example of industrial melanism. 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. ![]() carbonaria, the black-bodied peppered moth. For its evolutionary ancestry, see Insect evolution.īiston betularia f. This article is about the peppered moth's significance in evolutionary biology. ![]()
0 Comments
Leave a Reply. |
Details
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |