- Fish Three different Classification schemes - Frog Scheme I Amphibia Mammalia Reptilia Aves Included groups...
Exercise: Many older classifications are not monophyletic, and do not reflect the evolutionary relationships among species. As an introduction to phylogenetic classification, think about the tetrapods (animals with four legs). These animals have traditionally been classified into four groups, all of the same rank: Class Amphibia (frogs, salamanders, newts, etc.) Class Reptilia (snakes, lizards, crocodiles, turtles, etc.) Class Aves (birds) Class Mammalia (mammals) Reptiles possess a common ancestor with certain extinct amphibians, the birds are derived from a group of...
We commonly hear the word "reptile" used. Is Reptiles a Monophyletic group (represents all the descendents of a single ancestor) group in any of these trees? Explain your answer. Crocodylia Aves Mammalia 10 Lepidosauria (Snakes/Lizards) Chelonia (Turtles) HAEMOTHERMIA (1-17) THECODONTIA (18-27) EUAMNIOTA (28-37) | AMNIOTA Fig. 1. The sister group relationships among the five assemblages of living amniotes advocated by Gardiner (1982; see also Løvtrup, 1985). The numbers of the synapomorphies Gardiner employed are displayed on the cladogram. Redrawn from...
There are a total of 8 pages. If you click on the first picture, the others should pop up. Thank you! ul Bio220 - Diversity of Life HW 2: Phylogenetics First Some Review and Examples... There are several definitions that you will need to be familiar with in order to properly use and understand phylogenetic systematics. - Character: A heritable attribute of an organism. - Plesiomorphy: A primitive or ancestral character. This is a character that was inherited from a...