Classification & Evolution Review

The species of finches that Darwin observed differed in the shape of their beaks. According to Darwin, all of these species probably

• Had a Common Ancestor

• migrated from Africa

• had descended from similar birds in Africa.

• Ate the same diet

Natural selection could not occur without

• genetic variation in species.

• stable environments.

• competition for unlimited resources

• gradual warming of the Earth.

Scarcity of resources and a growing population are most likely to result in

• decreased homology.

• increased genetic variation.

• increased competition.

• convergent evolution.

Refer to the illustration above. The similarity of these structures is one form of evidence that the organisms

• share a common ancestor

• live for a long time

• all grow at different rates.

• evolved instantaneously.

Which of the following is most likely a vestigial structure?

• flower color

• the beak of a finch

• fossil of a snail

• the human tailbone

Evidence that evolution occurs includes all of the following except

• homologous structures among different organisms.

• the fossil record.

• similarities and differences in proteins and DNA sequences between organisms.

• acquired characteristics.

The accumulation of differences between populations that once formed a single population is called

• coevolution.

• divergent evolution.

• adaptation.

• cumulative differentiation.

The process in which two or more species become more adapted over time to each other’s presence is called

• Divergence

• Coevolution

• Competition

• Radiation

Artificial selection has been used by humans to

• study the process of coevolution.

• stop evolution in domestic animals.

• slow down the process of convergent evolution.

• speed up the process of divergent evolution

.The idea of inheritance of acquitted characteristics was proposed by

• Charles Darwin.

• Jean-Baptiste Lamarck.

• George Cuvier.

• Charles Lyell