In the 1950s, Bernard Kettlewell tested the idea experimentally by marking several hundred peppered moths (typicals as well as melanics) and releasing them onto tree trunks in a polluted woodland near ...

Learners will understand that changes in the environment can affect a species’ ability to survive and reproduce. Show your class the different types of tree bark. Get your class to predict which ...

In the peppered moth population of Great Britain there is ... Because they were well camouflaged against the lichen-covered trees, they were better able to avoid predation. During the nineteenth ...

It must have seemed terribly ironic to late University of Cambridge evolutionary biologist Michael Majerus, after dedicating nearly half a century to the study of peppered moths (Biston betularia ...

‘If the abnormalities consist of missing leaves, partially missing leaves covered with webbing and a ground pepper-like material (boxwood tree moth excrement), it may be because the box tree ...