Embryology & Evolution

A change in the inherited characteristics of an organism over time is ________

• evolution.
• development.
• growth.
• ancestry.

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NGSS.MS-LS4-2

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Another word for specific parts that form an organ, system, or living thing is __________.

• structure.
• vertebrae.
• forelimb.
• organism.

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NGSS.MS-LS1-3

_____________  is the study of embryos to see how their similarities and differences indicate an evolutionary relationship.

• Paleontology
• Common ancestry
• Homologous structure
• Embryology

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NGSS.MS-LS4-2

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The most recent ancestral form or species from which two different species evolved is known as ________________________.

• a common ancestor.
• an embryonic stage.
• development.
• evolution.

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NGSS.MS-LS4-2

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In stage one (top row) of these embryos, most of the embryos________

• look very similar.
• have very different features.
• show different stages of development.
• have only a tail if they are non-human.

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NGSS.MS-LS4-2

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In stage 2 (middle row) fish embryos _________

• are very different bird and mammal embryos.
• are still very similar to bird and mammal embryos.
• show arm and leg buds.
• are the only embryos with tails.

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NGSS.MS-LS4-2

NGSS.MS-LS4-3

In the the third embryonic stage (bottom row), mammal embryos _____

• have more characteristics in common with each other than with reptiles or birds.
• are still hard to tell from reptiles and birds.
• have the same features as fish, reptiles, and birds.
• do not have tails.

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NGSS.MS-LS4-2

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Ostrich wings are examples of

• homologous structures
• vestigial structures
• adaptations
• traits

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NGSS.MS-LS4-2

Dolphins have the same arm structure as wolfs, what type of evidence for evolution does this represent?

• DNA
• vestigial structures
• homologous structures
• embryology

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NGSS.MS-LS4-2

What would indicate that a series of fossils represent evolution?

• the fossils were identical
• the fossils were found in the same layers of rock
• the fossils show similarities
• the fossils were completely different

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NGSS.MS-LS4-2

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