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The tree shown is a cladogram of a sample from various taxonomic orders of mamma

ID: 169929 • Letter: T

Question

The tree shown is a cladogram of a sample from various taxonomic orders of mammals. A related outgroup species, the Monotreme (a primitive mammal which evolved before placentals and marsupials), is included to root the phylogenetic tree. In answering the questions below, refer to the strength of support from bootstrap analysis. Please answer in full sentences. All answers can be drawn out from the picture.

(A) Do these results support the hypothesis that grouping only the orders of Primates, Rodents, Lagomorphs, Scandentia, and Dermoptera are monophyletic?

(B) Do they support the hypothesis that the taxonomic group of Laurasiatheria is monophyletic?

(C) According to the tree, do the orders Carnivores, Pholidates, and Cetartiodactyls form a monophyletic group?

(D) Are Afrotheria and Laurasiatheria a monophyletic group?

THIS QUESTION DOES NOT ASK FOR ANY DEFINITIONS. EVERY QUESTION USES THE FIGURE TO ASNWER ALL FOUR QUESTIONS. PLEASE PROVIDE ANSWER FOR A,B,C,D INDIVIDUALLY. GREATLY APPRECIATED.

Marsupialia Afrosoricida Proboscidea Sirenia Xenarthra Dermoptera Primates Lagomorpha Rodentia Eulpotyphl la 4 Pholidota Perissodactyla f Chiroptera

Explanation / Answer

A)No,these results do not support the hypothesis that grouping only the orders of Primates, Rodents, Lagomorphs, Scandentia, and Dermoptera are monophyletic.

B) No, the results do not support the hypothesis that the taxonomic group of Laurasiatheria is monophyletic.

C) Yes,according to the tree, the orders Carnivores, Pholidates, and Cetartiodactyls form a monophyletic group.

D) Yes ,Afrotheria and Laurasiatheria are a monophyletic group.