The peppered moth population in a locality has light and dark moth varieties. what is the likely cause of a relatively lower population of dark moth variety in the locality? a pollution-free environment increasing lichen growth. b highly polluted environment increasing lichen growth. c pollution-free environment covering the barks with black soot. d highly polluted environment covering the barks with black soot.

Examine the two squirrel populations in the accompanying figure. the populations are separated by a geographic barrier. if after a long period of time the two species are no longer separated, what evidence is needed to determine if speciation has occurred? the figure shows two populations of squirrels separated by a geographic barrier. examine the two squirrel populations in the accompanying figure. the populations are separated by a geographic barrier. if after a long period of time the two species are no longer separated, what evidence is needed to determine if speciation has occurred? the figure shows two populations of squirrels separated by a geographic barrier. polyploidy is creating new species. the two populations are not interbreeding freely. hybrid offspring of the two populations begin to appear. one species will increase into a population size twice as large as the other species.

The wings of insects, birds, and bats evolved independently but carry out similar functions. this is an example of a. analogous structures. b. embryonic structures. c. vestigial structures. d. homologous structures.

Give an example of a trait that is controlled by more than one gene.