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Wake-up 1.Make 2 observations about the diagram below. Make sure that it has to do with the animals, not the design of the diagram.

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Presentation on theme: "Wake-up 1.Make 2 observations about the diagram below. Make sure that it has to do with the animals, not the design of the diagram."— Presentation transcript:

1 Wake-up 1.Make 2 observations about the diagram below. Make sure that it has to do with the animals, not the design of the diagram.

2 Phylogeny Christopherson

3 Define: Cladistics/Phylogeny Evolutionary history of organisms

4 Phylogenetic Trees Diagram representing evolutionary relationships

5 How to Read a Phylogenetic Tree Characteristics Common Ancestor Branch = Speciation Organisms

6 How to Make a Phylogenetic Tree #1 Group organisms by shared characteristics; often provided

7 How to Make a Phylogenetic Tree CharacteristicsSharkBullfrogKangarooHuman Vertebrate Two pairs of limbs Mammary glands Placenta x xx x x x xx x x Place X’s according to what characteristics the organisms have. In case you don’t know what a placenta is, I have attached a picture. I have also attached a video of a kangaroo showing how it works as a marsupial.

8 How to make a Phylogenetic Tree #2 Place characteristics on the phylogenic tree; The characteristic that all organisms share will be at the bottom. Shared characteristic by all

9 Vertebrate Pairs of Limbs Mammary Glands Placenta

10 How to make a Phylogenetic Tree #3 Place organisms on the tree; organism with the fewest characteristics on the first line Organism with fewest Organism with most

11 Shark Bullfrog Kangaroo Human Vertebrate Pairs of Limbs Mammary Glands Placenta

12 Shark Bullfrog Kangaroo Human Vertebrate Pairs of Limbs Mammary Glands Placenta a. What characteristics do the bullfrog and the kangaroo have in common? Vertebrate Paris of Limbs

13 Shark Bullfrog Kangaroo Human Vertebrate Pairs of Limbs Mammary Glands Placenta b. Which organism is most closely related to the human, the bullfrog or the shark? Explain. Bullfrog: Share the most characteristics

14 What characteristic(s) do a crocodile and a rabbit have in common? Vertebrate, bony skeleton, four limbs, and amniotic egg

15 Which organism is most closely related to a bird? What trait links them together? Crocodile; eggs with shells

16 What organism(s) have vertebrate, bony skeleton, four limbs? Amphibians, Primates, Rodents/Rabbits, Crocodiles, and Birds

17 Activity: Creating a Cladogram -You are about to build a Cladogram. The video above will really help you in your construction. -Once complete watching the video, find a partner to work on the cladogram. -Cut and past the critters on a long piece of white paper. -Make sure to include characteristics on the lines. As far as what those are, be creative. -Put both partners name on the paper and turn it into the bin. -Pick up your homework


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