Evolution Common Ancestor

If you have a dramatic change resulting in a new species in between long stretches of time with no change this would be

• Gradualism

• Swift speciation

• Punctuated Equilibrium

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NGSS.HS-LS4-5

Punctuated Equilibrium implies catastrophic events caused natural selection to speed up due to great environmental changes.

• True

• False

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NGSS.HS-LS4-4

NGSS.HS-LS4-5

The change in traits over time in a population is known as

• Evolution

• Mutation

• Selection

• Traits

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NGSS.MS-LS4-2

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Body parts of organisms that are the same in structure and position but different in function and shared by a common ancestor.

• embryos

• homologous structures

• analogous structures

• vestigial structures

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NGSS.MS-LS4-2

Images of the embryo and adult stages of three different organisms are shown.

Which of the following is the best conclusion that can be drawn from this evidence?

• Having similar embryos indicates that these organisms eat the same types of food.

• Having similar embryos indicates that these organisms share a recent common ancestor.

• Having similar embryos indicates that these organisms live in a similar environment.

• Having similar embryos indicates that a certain protein controls how many legs the adult organisms will have.

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NGSS.MS-LS4-2

NGSS.MS-LS4-3

Body parts that have lost their original function.

• embryos

• homologous structures

• analogous structures

• vestigial structures

Body parts that function like each other, but are different in structure and NOT shared by common ancestor

• embryos

• homologous structures

• analogous structures

• vestigial structures

Which of the following do scientists as evidence to support the theory of evolution?

• DNA similarities

• Comparing early stages of embryos

• Comparing organisms' body structures

• Studying the fossil record

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NGSS.MS-LS4-1

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NGSS.MS-LS4-3

Whales, which live in the water, have hip bones. Which of the following best explains why whales have hip bones?

• Whales have evolved this structure because it might be useful in the future.

• Whales are able to interbreed with other animals that have hips.

• Whales have a diet that includes other animals that have this structure.

• Whales share a common ancestor with animals that walk on land.

Tags

NGSS.MS-LS4-2

Organisms that share a recent common ancestor have very similar DNA.

• True

• False

Tags

NGSS.HS-LS3-1

NGSS.HS-LS4-1