3/24 & 3/25- 7th Grade Agenda Learning Objective: Learn about Shared Derived Characteristics Collect HW: Reading & Notetaking p. 124 -126 Marble Race.

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3/24 & 3/25- 7th Grade Agenda Learning Objective: Learn about Shared Derived Characteristics Collect HW: Reading & Notetaking p. 124 -126 Marble Race Project

Reflection Prompt: Write 3 things that you are planning to do during Spring Break.

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

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

Similarities in Early Development

Human Embryos have tails and gill slits

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

Branching Tree shows how closely related species are

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

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

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

Canine Family Tree Canine: conical teeth Lupus: means wolf

Human Evolutionary tree

Levels of Classification

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

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