Natural Selection
Natural Selection
Natural Selection
The darkening of the population of the peppered moth in Europe over a relatively short time demonstrated natural selection in action. The change in moth coloration was a response to industrial pollution, where darker moths had a survival advantage in a polluted environment as they were better camouflaged from predators. This phenomenon provided a clear example of adaptation and evolution in response to changing environmental conditions.
The dark colored moths increase over ten- year period.
Directional Selection
Kettlewell showed through his research the effects of the industrial revolution had upon natural selection and evolution. He demonstrated that the peppered moth in industrialised areas were darker than their counterparts in rural locations. This is predominantly due to the soot from factories and the steam powered mechanical equipment at that time darkening the trees upon which they settled, thus the lighter coloured moths were eaten by their predators and the black survived. The opposite was true in rural locations. As such is recorded as an early citing of "man's" influence over the environment and demonstrated Darwins theory of natural selection in evolutionary terms.
Peppered with Smut was created in 1999.
The colour of the peppered moth is often used as an example of natural selection. During the Industrial Revolution, the surfaces on which peppered moths frequently settle became increasingly stained with soot from the chimneys of factories, darkening them. Lighter-coloured moths would more easily be seen on these darkened surfaces by predators, and so the chances of survival were less for lighter moths than for darker moths; having a darker colour bestowed a reproductive advantage. As a result, the average colour for the population as a whole became darker.
POde POde
Black peppered moths and white peppered moths
Peppered; a synonym of scattered, could either be a verb (to pepper) or an adjective (to be peppered). Or the act of adding the spice pepper.She peppered the egg salad with avocado; just how her husband liked it.He was peppered all over his body with small spots and boils. The plague had another victim!This soup has been well over peppered! I can't taste anything else!
The word 'peppered' can mean "seasoned with pepper."But it can also mean showered with (or within) as when pepper is applied.-- The reporters peppered the mayor with questions : asked many, or all at once-- The shotgun peppered the barn wall : made many small separate holes-- His speech was peppered with slang words : they occurred frequently