Dichotomous Keys: a set of paired statements that describe physical characteristics of different organisms.

Slides:

Advertisements

Similar presentations

Warm-up What are the 2 parts that make up the Latin name of a species?

Advertisements

Estimating and using phylogenies

Finding Order In Diversity

Section 17.2 Summary – pages

Is a hippopotamus more closely related to a pig or to a whale?

CLASSIFICATION Finding Order in Diversity. Kingdom Phylum Class Order Family Genus Species DEFINE TAXONOMY Discipline of classifying organisms and assigning.

1 Chapter 25: Phylogeny and Systematics Valuable Information Can Be Derived From Classifying Organisms A parasitic flatworm, Schistosoma, causes a blood.

Objective: I create a cladogram using traits that have evolved. Agenda: 1.Test Corrections 2. Bell Ringer 3. Classification Vocab 4. Cladogram notes 5.

CLASSIFICATION LAB 08. Purpose: Review classification of organisms. Construct and map the relationships of members from the Kingdom Animalia.

Chapter 17: Organizing Life’s Diversity

Similar traits often indicates common ancestry Phylogeny (fahy-loj-uh-nee): evolutionary histories of a species Determined by examining: – Fossils –

Finding Order in Diversity

CLASSIFICATION Chapter 14 Finding Order in Diversity.

CLADOGRAMS The characteristics shown on the line that points to the right are shared by the animals to the right. The characteristics farthest to the right.

Cladograms Show phylogeny or EVOLUTIONARY

CLASSIFICATION Finding Order in Diversity. TAXONOMY Discipline of classifying organisms Assigning each organism a universally accepted name.

Cladograms. Evolutionary tree used to  Test hypotheses about evolution  Learn about the characteristics of extinct species and ancestral lineages 

Classifications Tuesday 3/3/2015 Agenda: Cladograms

Cladograms RaccoonsLesser pandasGiant pandasBears Common Ancestor Cladograms are sometimes called branching diagrams Show phylogeny or EVOLUTIONARY HISTORY.

 Organisms are grouped into clades  A clade is a group of species that includes an ancestral species and all of its descendants  Based on a new trait.

DICHOTOMOUS KEYS: a set of paired statements that describe physical characteristics of different organisms.

Constructing Cladograms Do Now Constructing Cladograms Key Question: What does a family tree tell you? Initial Thoughts:

Study of evolutionary relationships Evidence shows all life evolved from a single, common ancestor.

Is a hippopotamus more closely related to a pig or to a whale? Is a hippopotamus more closely related to a pig or to a whale?

 Phylogenetic trees and Cladograms are hypotheses. The only guarantee is that they will change as we gather and analyze more data. From Young and Strode.

1 Classification. 2 Why Classify? Why Classify? Classification is the arrangement of organisms into orderly groups based on their similarities in DNA.

Comparative Vertebrate Anatomy Evolutionary Relationships.

Tree of Life.    Pictorial representation of the branching patterns of evolution that are reflected in modern taxonomy  Each branch is called a clade.

Today you need: Classification notes from orange bin. Writing utensil

Modeling Divergent Evolution

Systematics and Phylogenetic Revolution

Evidence for evolution

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

Phylogenetic Tree Activity

The science of naming organisms.

1.6: Phylogenetic trees and cladograms are graphical representations (models) of evolutionary history that can be tested. 1. Phylogeny.

Classification Based on Evolutionary Relationships

Warm-up What are the 2 parts that make up the Latin name of a species?

Grouping organisms based on similarities

Cladistics is classification based on common ancestry.

Cladistics and Phylogeny

Cladogram notes.

Part II: Evidence of Evolution.

Systematics and the Phylogenetic Revolution

Linnaeus’ classification system has seven levels.

Phylogeny and Cladograms

Do Now: 5/17 Objectives: Define homology and distinguish homologous structures from analogous ones. Use homology to make a cladogram of vertebrate animals.

Grouping organisms based on similarities

Cladistics is classification based on common ancestry.

Packet 12: Classification

Cladistics Cladistics: classification based on common ancestry

Classification of Living Things

Biology Unit 7 Notes: Phylogenetics & Cladograms

Phylogenetic Trees and Cladograms

Cladistics and Phylogeny

Cladistics is classification based on common ancestry.

Cladistics is classification based on common ancestry.

Warm Up 5/8-9 Which specific period would you like to live in? Why?

Cladistics is classification based on common ancestry.

Physical similarities are not always the result of close relationships.

Cladistics is classification based on common ancestry.

Phylogenetic Trees and Cladograms

Evolutionary Trees.

Modern Evolutionary Classification

How Dinosaurs Fit into the Evolutionary Tree of Life

Pick up notes for: Cladograms & Dichotomous Keys

Presentation transcript:

Dichotomous Keys: a set of paired statements that describe physical characteristics of different organisms

Dichotomous Key: Name that potato chip! ? ? ? ? ? ? ?

Now it’s Your Turn to Practice using a dichotomous key!! Practice classifying North Carolina leaves, fish, and norns (aliens!) by using the dichotomous keys in your packet. fish Norn NC Leaf

CLADOGRAMS: a diagram that shows evolutionary relationships among organisms. Based on PHYLOGENY: the evolutionary history of a species Doesn’t focus only physical characteristics, looks at evolutionary history instead Cladograms can also be called phylogenetic trees.

DERIVED TRAITS traits = Characteristics Derived traits are characteristics or features that are found in later organisms but not in earlier ones. Derived traits are represented as small tick marks on a cladogram with the name of the trait next them. Organisms closer to one another on the tree share a more recent ancestor than the ones farther away from each other. ALL organisms on this cladogram share a common ancestor

Derived Characteristics Practice Derived Characteristics Jaws Lungs Claws/Nails Feathers Fur/M. Glands Hagfish Perch Salamander Lizard Pigeon Mouse Chimp

Derived Characteristics Practice Derived Characteristics Jaws Lungs Claws/Nails Feathers Fur/M. Glands Hagfish Perch x Salamander Lizard Pigeon Mouse Chimp

Derived Characteristics Practice Derived Characteristics Jaws Lungs Claws/Nails Feathers Fur/M. Glands Hagfish Perch x Salamander Lizard Pigeon Mouse Chimp

Derived Characteristics Practice Derived Characteristics Jaws Lungs Claws/Nails Feathers Fur/M. Glands Hagfish Perch x Salamander Lizard Pigeon Mouse Chimp

Derived Characteristics Practice Derived Characteristics Jaws Lungs Claws/Nails Feathers Fur/M. Glands Hagfish Perch x Salamander Lizard Pigeon Mouse Chimp

Derived Characteristics Practice Derived Characteristics Jaws Lungs Claws/Nails Feathers Fur/M. Glands Hagfish Perch x Salamander Lizard Pigeon Mouse Chimp

Derived Characteristics Practice Derived Characteristics Jaws Lungs Claws/Nails Feathers Fur/M. Glands Hagfish Perch x Salamander Lizard Pigeon Mouse Chimp

You can also use this table to construct a cladogram! To help you, you can make a venn diagram. Hagfish perch salamander lizard pigeon mouse chimp Derived Characteristics Jaws Lungs Claws/Nails Feathers Fur/M. Glands Hagfish Perch x Salamander Lizard Pigeon Mouse Chimp

Now you can use your venn diagram to fill out the cladogram: chimp hagfish perch salamander lizard pigeon mouse feathers Fur; Mammary Glands Claws or Nails Lungs Jaws Hagfish perch salamander lizard pigeon mouse chimp Jaws Lungs Claws/Nails Feathers Fur/M. Glands