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| 1. |
During development, homeotic loci specify
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| 2. |
Evidence that homeotic loci in vertebrates are homologous to those in invertebrates includes
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| 3. |
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| 4. |
Valentine et al.'s phylogenetic study of Hox loci led to which of the following conclusions about the relationship between the number and types of Hox loci and changes in morphology during the evolution of different animal clades?
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| 5. |
According to the analyses presented in your text, morphological variation in arthropod body segments results from which of the following?
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| 6. |
Correctly match each of the following genes with its function in developing tetrapod limbs.
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Using the pulldown boxes, match each item on the left to the corresponding item at right.
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| A. establishes the anterior-posterior axis of the limb |
| B. establishes the dorsal-ventral axis of the limb |
| C. establishes the proximal-distal axis of the limb |
| D. tells cells where they are along the length of the limb |
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| 7. |
What pattern of expression of shh and Hox suggests that hands are an evolutionary "add-on" in tetrapods?
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To create paragraphs in your essay response, type <p> at the beginning of the paragraph, and </p> at the end.
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| 8. |
In Drosophila melanogaster, the "decision" about which type of limb will develop on a given body segment is controlled by the _____ gene(s).
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| 9. |
The evidence from Panganiban et al's studies that appendage-like outgrowths of the body wall are homologous in all bilaterally symmetric animals is particularly strong because
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| 10. |
In what two ways are the homeotic genes regulating flower development similar to the homeotic genes in animals?
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To create paragraphs in your essay response, type <p> at the beginning of the paragraph, and </p> at the end.
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| 11. |
Evidence that flowers are derived from whorls of leaves includes
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| 12. |
Weigel et al.'s model for the genetic control of flower development includes which of the following processes?
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| 13. |
Briefly define the term "deep homology" and list three characteristics deep homologies suggest were present in the common ancestor of bilaterally symmetric animals.
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To create paragraphs in your essay response, type <p> at the beginning of the paragraph, and </p> at the end.
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| 14. |
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Answer choices in this exercise are randomized and will appear in a different order each time the page is loaded.
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