Which of the Following Would Be the Best Example of Polymorphisms

Question

Which of the following would be the best example of polymorphisms changing in various environments?
A) Yellow eyes and white wings in Drosophila
B) The Duffy polymorphism in humans
C) The light and dark forms of the Peppered moth
D) The white and blue flowers of Lianthus parryae
E) All of these

Accepted Answer

The light and dark forms of the Peppered moth are a classic example of polymorphisms changing in response to environmental factors. The shift in coloration from light to dark occurred in response to the increase in pollution during the Industrial Revolution, which caused the trees to darken from soot. This allowed the dark forms of the moth to blend in and avoid predation, leading to a decrease in the frequency of the light form and an increase in the frequency of the dark form.