Evolution and Natural Selection End of Unit Review

Which scientist gets credit for creating the theory of evolution?

• Isaac Newton

• Lamarck

• Charles Darwin

• Alfred Wallace

Species adapt to their environment through

• Natural selection

• Sexual selection

• Changes in the environment

• Speciation

For what reason did Darwin conclude the Galapagos finches had different sized beaks?

• To attract females

• To compete

• To eat various sized foods

• For grooming purposes

To be considered a species, you must be able to produce offspring.

• True

• False

Natural selection means the biggest, strongest, and fastest organisms survive.

• True

• False

The rock pocket mouse population started off with white fur. After a volcanic eruption, many more dark mice survived and reproduced. What caused the mouse population to have dark fur?

• The ash from the volcano

• They adapted to their environment

• Their parents must have had dark fur

• A mutation

In order for evolution to occur, there must be mutations in the gene pool because they

• Are usually related to the environment in which they appear

• Are usually beneficial to the organism in which they appear

• Usually cause species of organisms to become extinct

• Contribute to new variations within the organisms

Natural selection is a major cause of evolution because

• Organisms with mutations usually survive and reproduce

• Only organisms with desired characteristics are allowed to reproduce

• Organisms with beneficial traits will adapt to their environment and survive to reproduce

• Humans breed plants and animals to select useful traits

Two organisms share 97% of their DNA. Therefore, we can conclude that they

• Are closely related evolutionarily

• Do not share a close common ancestor

• Have the same genotype

Organisms which have similar bone structure are called

• Homologous structures

• Heterozygous structures

• Vestigial structures

• Stabilizing structures