Question

Please provide an explanation for each answer

Please answer each question in detail and give an explanation Question 1: Use the table and the phylogenic tree to answer the following questions. Using the cytochrome b gene. Use the round stingray (Urolophus concentricus) as an outgroup to root your tree. Latin name Carcharodon carcharias Isurus onyrhyncus Isurus paucus Lamna ditropis Lamna naus Order order I Common name Great White shark Shortfin mako shark Longfin mako shark Salmon shark Porbeagle shark Pelagie thresher shark Common thresher shark order order Lamniformes order Carcharhiniformes order Carcharhiniformes order Carcharhiniformes Alopias vulpins etorhinus maxiius Prionace glauca Galeocerdo cuvier Negaprion brevirostris Megachasma pelagios Basking shark Blue shark Tiger shark Lemon shark Megamouth shark Round stingray order Myliobatiformes -Pelagic Thresher Common Tresher Salmon ShortFinMako GreatWhise Blae Shark Round Stingray 0.2 Your essays should reflect the reasoning strategies that you followed to resolve these problems. Your figures should include short captions that complement your text answers Read the entire question carefully. 1. Do your trees support the monophyly of the orders Lamniformes and Carcharhiniformes? Explain your 2. Is the genus Isurus monophyletic, i.e. do all members of this genus appear to have a common ancestor? 3. There has been some controversy over the relationships between the white shark, mako sharks and answer in detail How about for Lamna? How about for Alopias? Explain your answer in detail. porbeagle sharks (genus Lamna). Based upon some aspects of external and dental morphology, some authors believe white sharks are more closely related to the porbeagle sharks, although fossil evidence suggests the white shark is more closely related to the makos. Which relationship do your trees best support? Give good examples to support your answer In 1979, off the Hawaiian Islands, a very unusual new species of shark was captured by the Navy. A large to 15-16 feet total length) deep dwelling filter feeder, this unique shark represented not only a new species, but an entirely new genus and family! Named the megamouth shark, Megachasma pelagios, the shark has since been grouped as a member of the order Lamniformes. In addition, it has been hypothesized that its closest relative would be Cetorhinus maximus (the Basking shark), the only other member of this group that is a filter feeder. Do your analyses (phylogenic tree) support the placement of the megamouth in the 4.

Answer 1