Evidence of Evolution

For which term is this a definition: Structures with the same parts but different functions suggests that organisms share a common ancestry?

• vestigial structures

• homologous structures

• adaptive radiation

• fossil

Two organisms that are closely related would have

• very similar DNA sequences

• exactly the same DNA sequences

• no proteins in common

• completely different DNA sequences

If modern organisms have a lot of homologous structures, what inference might paleontologists make about those organisms?

• They are reptiles

• One organism evolved from the other

• The organisms have a common ancestor

Which is not evidence for evolution?

• many animals have homologous structures due to common ancestry
• Many animals have vestigial structures from an ancestor
• We can observe changes in life forms by observing the fossil record
• All of these are evidence for evolution

The diagram illustrates an embryonic stage of two organisms.

Which of the following can be determined by observing the embryos shown in the diagram?

• The organisms share a common ancestor

• The organisms belong to the same genus

• The organisms are native to the same geographic area

• The organisms will grow into anatomically similar adults

Which is NOT used as evidence for evolution?

• DNA sequences

• Natural Selection

• Embryo Development

• Anatomical Comparisons

Structures similar in function but not in structure are called what?

• Vestigial

• Homologous

• Analogous

• Embryonic

Which layer is the youngest

• 1
• 2
• 3
• 4

What is this an example of?

• Homologous structure

• Analogous structure

• Vestigial organs

• Functional adaption

The appendix, which is not needed to survive, is considered to be a

• Homologous Structure

• Analagous Structure

• Vestigial Structure

• Homology