By examining the genetic variance around this mutation, Saccheri’s team estimated that the hue-altering mutation occurred within a 10-year period around 1819, which fits with records of the black ...

An evolutionary biologist’s posthumous publication restores the peppered moth to its iconic status as a textbook example of evolution. Amid cuts to federal funding, US universities tighten budgets, ...

And because they cannot digest a lot of the plant matter, they defecate more than 100 times per day. Peppered moths can be white with black speckles, primarily black, or intermediate between the two.

Evolution by natural selection is the process of change in the characteristics of a population in response to the environment. Observations of peppered moths (Biston betularia) in the UK are an ...

In the peppered moth population of Great Britain there is variation in the colour of the moth’s bodies. Some moths have a light body; some have a dark, or melanic body. Body colour is an ...