[CIM Reviews]

10. In peppered moths, there are 2 color patterns which are found within any population. These are either 1) dark gray with blackish spots on the wings or 2) white with black spots on the wings. Both color forms live on the bark of trees.

Many of the moths migrate to a nearby city in search of new habitat and mates. There are many polluting factorys on the edge of this city. The bark of the birch trees in this city are covered with dark, grayish soot from the factories. Which color form of moth will have a greater chance to survive in the city and pass its genes for body coloration on to its offspring?

a) the gray moths that have black spots on the wings.

b) the white moths that have black spots on the wings.

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