Homologous and Vestigial Structures

Evidence of Evolution

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Multiple Choice

Homologous Structures are evidence of what?

• nothing

• a common ancestor

• natural selection

Multiple Choice

Homologous structures are

• same structure, different function

• same function, different structure

Multiple Choice

Butterfly wings and bird wings are

• analogous structures

• homologous structures

Multiple Choice

Human arm and a dog leg are

• analogous structures

• homologous structures

Multiple Choice

When a structure no longer serves a purpose it is considered

• analogous

• homologous

• vestigial

Multiple Select

Which of the following are considered vestigial structures?

• human arm

• human appendix

• hip bones on whales

• wisdom teeth

• human toes

Multiple Choice

Human arm and a dog leg are

• analogous structures

• homologous structures

Dropdown

The fossils found closer to the surface of the ground are generally -

Select answer

Evidence of Evolution

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Multiple Choice

What can we discover by viewing embryos of different species?

• How close they are related in terms of evolution

• What they will look like as adults

• Any vestigial structures that are present

• The average age that they can live to.

Multiple Choice

Comparing DNA sequences shows___.

• How closely related organisms are

• Traits that can become available

• Evolution is not real

• That organisms have evolved from several different organisms.

Multiple Choice

What can we tell by comparing the arm structures of the human and frog

• These animals have vestigial structures

• These animals descended from a common ancestor

• These animals have analogous structures because they live in same environments.

• Only humans have bones in their arm.