25.2
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9 terms
Terms | Definitions |
|---|---|
 The camera-type eyes of octopuses are very complicated and have many of the same features as the camera-type eyes of vertebrates. Yet, the eyes of invertebrates and vertebrates are not homologous. This situation is an example of | b. homoplasy. |
| shared primitive characters | C. homologous |
| bat wing and butterfly wing | B. analogous |
| whale pectoral flipper and horse foreleg | C. homologous |
| The four-chambered hearts of birds and the four-chambered hearts of mammals evolved independently of each other. If one were unaware of this independence, then one might logically conclude that | d. the common ancestor of birds and mammals had a four-chambered heart. |
| Some claim that the birds should continue to be placed in a class (Aves) separate from the Reptilia, despite evidence from molecular systematics indicating a close relationship between birds and crocodiles. Their claim is based on the extent of the adaptations that birds have undergone for flight. The logic of their claim is most similar to that found in which statement? | b. Humans should be placed in their own order because no other member of the order Primates features so many modifications for bipedalism. |
| Species that are not closely related and that do not share many anatomical similarities can still be placed together on the same phylogenetic tree by comparing their | e. homologous genes that are highly conserved. |
| Which statement represents the best explanation for the observation that the nuclear DNA of wolves and domestic dogs has a very high degree of homology? | d. Dogs and wolves shared a common ancestor very recently. |
| What is true of gene duplication? | X |
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