The viceroy butterfly (limenitis archippus) resembles the queen butterfly (danaus gilippus), a species toxic to birds because of alkaloids it stores during larval development from the milkweeds it feeds upon. The viceroy butterfly is an example of what kind of defense against predation?

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#Question id: 4569

#Section 2: Evolution

Which of the following must exist in a population before natural selection can act upon that population?

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#Question id: 4570

#Section 2: Evolution

Which pair would probably have agreed with the process that is depicted by this tree?

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#Question id: 4571

#Section 2: Evolution

Evolutionary trees such as this are properly understood by scientists to be

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#Question id: 4572

#Section 2: Evolution

Of the following anatomical structures, which is homologous to the wing of a bird?

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#Question id: 4573

#Section 2: Evolution

Which of the following pieces of evidence most strongly supports the common origin of all life on Earth?

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#Question id: 4574

#Section 2: Evolution

Ichthyosaurs were aquatic dinosaurs. Fossils show us that they had dorsal fins and tails, as do fish, even though their closest relatives were terrestrial reptiles that had neither dorsal fins nor aquatic tails. The dorsal fins and tails of ichthyosaurs and fish are