The shape of the beaks of Darwin\'s finches and industrial melanism are often ci

Question

The shape of the beaks of Darwin's finches and industrial melanism are often cited a^of the process of _____ leading to evolutionary change. a. artificial selection b. coevolution c. intelligent design d. founder effect e. natural selection In Darwin's finches, a. occurrence of wet and dry years preserves genetic variation for the beak size b. increasing beak size over time proves that beak size is inherited c. large beak size is always favored d. All the choices are correct Domestication of foxes has led to: a. a variety of homologous structures. b. a variety of phenotypes. c. a variety of mutations. d. a variety of reproductively isolated breeds. e. a variety of different species. Changes in the fossil record are evidence for evolution because a. they show descent with modification. b. they show inheritance of acquired characteristics. c. they show evolutionary change at the level of the individual. d. they show gaps in the fossil record.

Explanation / Answer

(4)e. Natural selection

Industrial melanism and shape of the beaks are an example of higher fitness and are thus favored by natural selection.

(5)a. occurrence of wet and dry years preserves genetic variation for beak size

Selection in different years favors different phenotypes. Assuming that there is a genetic basis to variation in beak size, this oscillating selection will maintain variation through time.

(6) d. a variety of reproductively isolated breeds

(7) a.. they show descent with modification.

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