Evolution of Embryology

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

• evolution.

• development.

• growth.

• ancestry.

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

• common ancestor.

• embryonic stage.

• development.

• evolution.

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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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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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What type of evidence is represented in the picture above:

• Fossils

• Vestigial Structures

• DNA

• Homologous Structures

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According to the cladogram, which organism is most distantly related to the human?

• crayfish

• grasshopper

• perch

• frog

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Who was Charles Darwin?

• A naturalist who came up with the theory of evolution

• A scientist who studied plants

• A geologist who looked at rocks and fossils

• A paleontologist who studied dinosaurs

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A trait that makes some of the species different that others

• homologous

• embryology

• evolution

• variation

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Which scientist is known for his pioneering work in the field of embryology and proposed the recapitulation theory?

• Charles Darwin

• Ernst Haeckel

• Gregor Mendel

• Louis Pasteur

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What does the recapitulation theory, proposed by Ernst Haeckel, suggest about embryonic development?

• Embryos develop independently of evolutionary history

• Embryos of different species look completely different

• Embryos pass through stages resembling adult forms of their evolutionary ancestors

• Embryos develop in a random manner

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