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Essential Question: How does DNA provide evidence that your fossil is related to something living today?

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Prehistoric Park - DNA Test Results

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Archaeopteryx

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Lion

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Black-Necked Stilt

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Hawk

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Your Fossil

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Lion

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Black-Necked Stilt

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Hawk

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Your Fossil

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Lion

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Black-Necked Stilt

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Hawk

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Your Fossil

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Lion

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Black-necked Stilt

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Hawk

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Directions: The strands of DNA above represent the "Manx" gene sequence of tail development for vertebrate organisms.

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1. Write the name of your fossil in the cell "Your fossil"

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2. Compare the other three strands of DNA to your fossil’s DNA. Highlight the bases that are different from your fossil’s DNA.
There should be no highlighting in your fossil’s line of DNA.

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3. How many "mismatches" are there between your fossil and Organism #1? 135
a. What is the percentage of matched DNA? 48% (# of matched base pairs / 260)

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4. How many "mismatches" are there between your fossil and Organism #2? 32
a. What is the percentage of matched DNA? 88% (# of matched base pairs / 260)

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5. How many "mismatches" are there between your fossil and Organism #3? 9
a. What is the percentage of matched DNA? 96% (# of matched base pairs / 260)

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6. On your evolutionary tree...
a. Which organism on your tree could be "Organism 1"? A lion
b. Why? The archaeopteryx has some similarities with the lion but not a ton

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7. On your evolutionary tree...
a. Which organism on your tree could be "Organism 2"? The black-necked stilt
b. Why? The black-necked stilt could be organism 2 because it and the archaeopteryx has a lot of similarities but not as many as the hawk

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8. On your evolutionary tree...
a. Which organism on your tree could be "Organism 3"? A hawk
b. Why? A hawk is very closely related to the archaeopteryx but still not the same animal.

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# data[].attributes.attachment_link.title
Copy of Comparing DNA Strands Readout - Mod

# data[].attributes.headline
Evan Malcore and Sienna Roling 2B - Archaeopteryx

# data[].attributes.subject
Evan Malcore and Sienna Roling 2B - Archaeopteryx

# data[].attributes.body
This is what our organism was predicted to look like back when it was first discovered. We used this picture to find out what organisms were similar to the Archaeopteryx.

# data[].attributes.body
Scienctific Name: "Archaeopteryx"

Common Name:
"old wing"