Evidence of Evolution (Check for Understanding)

What is common ancestry?

• When a species no longer exists

• When organisms are descended from a single ancestor

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NGSS.MS-LS4-2

NGSS.MS-LS4-3

What is this an example of?

• vestigial structures
• embryology
• homologous structures
• fossil record

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NGSS.MS-LS4-2

Two organisms that are closely related would have

• very similar DNA sequence
• exactly the same DNA sequences
• no proteins in common
• completely different DNA sequence

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NGSS.MS-LS4-2

NGSS.MS-LS3-1

The study of the early stages of development that is one evidence of evolution is:

• Homologous Structures
• Embryology
• Vestigial Organs

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NGSS.MS-LS4-3

The fossil record help scientists

• better understand the kinds of organisms that lived in the past

• better understand how the environment has changed over time

• better understand how organisms have evolved over time

• all of the above

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NGSS.MS-LS4-1

How do fossils provide evidence that evolution has happened on Earth?

• Fossils show how the sizes of certain animals has changed drastically over millions of years
• Fossils show that some species have gone extinct
• Fossils show how life forms present today are different than those from the past
• Different sedimentary rock layers provide evidence for how the environment has changed over time

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NGSS.MS-LS4-2

NGSS.MS-LS4-1

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 ancestry.
• The organisms belong to the same genus.
• The organisms are native to the same geographic areas.
• The organisms will grow into anatomically similar adults.

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NGSS.MS-LS4-3

Humans, birds, whales, and lizards all have similar arm bones. What is the reason for this?

• The function of these bones is the same in all animals
• They live in similar environments
• They have a common ancestor
• All organisms resemble humans

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NGSS.MS-LS4-2

A human arm and a whale fin have similar bone structure but the whale fin is used for swimming and the arm is used for reaching and grabbing. What type of structures are these?

• Homologous structures

• Analogous structures

• Vestigial structures

• Fossil structures

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NGSS.MS-LS4-2

Which of the pictures above would be examples of homologous structures? (pick 2)

• 1

• 2

• 3

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NGSS.MS-LS4-2