Evidence of Evolution

What is the term for body parts that are similar in structure but have different functions and suggests that organisms share common ancestry?

• vestigial structures

• homologous structures

• embryos

• fossils

The study of early developmental structures in various organisms to determine relatedness.

• natural selection

• embryology

• speciation

• evolution

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

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

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NGSS.HS-LS4-1

Which layer is the youngest

• 1
• 2
• 3
• 4

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NGSS.HS-ESS1-5

These structures are

• homologous

• vestigial

• embryonic

• traces

Which of the following is an example of a vestigial structure?

• the wings of a red-tailed hawk

• the hind limbs of a house cat

• the fins of sharks

• the tailbone of a human

Similarities in bone arrangements, like those in the picture, support the hypothesis that...

• these organisms are not well adapted

• these organisms share a common ancestor

• these organisms all share the same DNA sequences

• these organisms are members of the same species

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NGSS.HS-LS4-1

The fact that both these mammals incubate their immature offspring in a pouch provides evidence that they-

• Belong to the same species

• Must range great distances to eat

• Have very similar skeletal structures

• Are descended from a common ancestor

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NGSS.HS-LS4-1

What conclusion can you draw from the fact that many modern whale species have vestigial pelvic and leg bones?

• The ancestors of whales may have been land mammals

• Whales could walk if they wanted to

• Whales are preparing to evolve into land animals

• Someday whales will be able to walk and will have legs