Saturday, July 26, 2008

Question - 17

Shown are two subspecies of a certain species. They are considered a classical example of a certain concept and have been cited repeatedly as proofs of a theory that explaines that concept. What theory/concept is it? I apologize for the slightly vague phrasing of the question. As an aside, let me reemphasize that googling is allowed and in fact is probably necessary for most questions.

Answer: The concept is "Industrial Melanism" and the theory is evolution. The name of the species is peppered moth. It used to be light in color but the soot deposits from the newly opened coal factories during the industrial revolution favored adaptation towards a darker color. iam, adi, divya, mekhala, anurag-thecrouchingtiger, raghu, an anon and imitator got it. Well done.

9 comments:

Anonymous said...

This is an example of adaptation to modernization. The example of natural selection (but not natural). The moth was selectively chosen due to Industrial Revolution

Anonymous said...

These are subscpeices of moths used as an example of evolution.

Moths use their color for camouflage. Originally they were light colored, but during Industrial revolution, many of the trees became dark due to soot, and the moths became dark colored to camouflage better. Once the pollution was reduced, the light colored moths reappeared.

Divya said...

"Industrial melanism" of the peppered moth, in favor of the theory of evolution.

mekie said...

An example for natural selection concept (in evolution) - this is the peppered moth - before (light) and after (dark) the Industrial Revolution in England.

Anurag Singh said...

Darwin Moths/ The theory of Evolution

Raghu said...

theory of evolution by natural selection

Anonymous said...

evolution within the span of generations.. white moth becomes black moth to adapt to surroundings etc

imitator said...

The peppered moth evolution as a result of industrial melanism.

Support for theory of evolution.

hirak said...

Butterfly Effect - Chaos Theory. These are butterflies in Brazil.