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2/4 & 2/5 - 7th Grade Agenda Learning Objective: Learn about Shared Derived Characteristics Collect HW: Reading & Notetaking p. 123 – 124 Classwork: Chap.

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Presentation on theme: "2/4 & 2/5 - 7th Grade Agenda Learning Objective: Learn about Shared Derived Characteristics Collect HW: Reading & Notetaking p. 123 – 124 Classwork: Chap."— Presentation transcript:

1 2/4 & 2/5 - 7th Grade Agenda Learning Objective: Learn about Shared Derived Characteristics Collect HW: Reading & Notetaking p. 123 – 124 Classwork: Chap 7 Study Guide Video: PBS Evolution Text Book Reading: 248 – 254 HW: Reading & Notetaking p. 125 – 128 Reminder Chap 7 Test on 2/11 & 2/12 Reminder Data Table, Graph & Procedures due 2/6 & 2/7 (15 Points)

2 Reflection Prompt: Write 3 reasons why species go extinct.

3 Review of Science Fair Data table, Graph and Procedures

4 Gradualism vs Punctuated Equilibria
Gradualism: The theory that evolution occurs slowly by steadily Punctuated Equilibria:Evolution occurs during short periods of rapid change separated by long periods of little or no change

5 What are homologous structures?
Similar structures that related species have inherited from a common ancestor

6 Similarities in Early Development

7 Human Embryos have tails and gill slits

8 Similarities in DNA – Is an Elephant and this Shrew closely related?
Scientists can determine how closely related the species are by comparing the DNA of different species DNA comparison has revealed that the tiny elephant shrew is closely related to the elephant

9 Branching Tree shows how closely related species are

10 Classification ilarities fied
Classification is the process of grouping things based on their sim__________. The scientific study of how living things are classi______ is called taxonomy ilarities fied

11 Linnaeus naming system
Linnaeus is a two word method of naming animals First word is called a genus and it is a classification grouping that contains sim_____ closely related organism. Second word is called species and it describes the distinctive feat_____ of an organism. ilar ure

12 Linnaeus Naming System
1st word is Genus 2nd word is Species Felis Concolor Felis Domesticus Felis Marmorata Cat Same Color Cat of the House Cat Marbled

13 Canine Family Tree Canine: conical teeth Lupus: means wolf

14 Human Evolutionary tree

15 Levels of Classification

16 Branching Tree Diagram
A branching tree diagram shows probable evolutionary rela_________ among organisms tionships

17 Shared derived characteristic
A branching tree diagram shows evolutionary relationships by grouping organisms according to shared chara________ Which characteristics appeared first? Backbone or Four Limbs Backbone cteristics

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