Warm-Up: The shaded sequence of nucleotides is for a gene from DNA that is similar to what you might find from a living human (Living DNA). The rest are sequences from five different ancestors. Sort the sequences starting with the living human to the most distant ancestor.

Date Session # Activity Page #1/15-16 Evidence of Evolution Notes 32

Genotype vs PhenotypeQuick Write

33

1/20-21 Taxonomy Notes 34

Cladograms 35

h/w: read pages 43B-49B, 54B-56B, 62B-67BEvolution Vocab 2 definitions & images &/or examples

8.L.4 Understand the evolution of organisms and landforms based on evidence, theories and processes that impact the earth over time.8.L.4.1 Summarize the use of evidence drawn from geology, fossils, and comparative anatomy to form the basis for biological classification systems and the theory of evolution

TLW analyze evolutionary relationship between organisms using evidence of evolution and phylogenetic trees to complete several w/s activities.

Kingdom Card Sort

There are 6 major classifications of living organisms. With your partners, sort the set of organism cards into six different groups. Be prepared to discuss the criteria you used to decide which group to place on organism in.

Kingdoms

1. Archaebacteria2. Eubacteria3. Protists4. Fungus5. Plants6. Animals

Modern System a Nested Hierarchy-Seven Levels of Organization

Kingdoms are divided into phylum Phylum are divided into a smaller groups called classes. Classes are divided into an orders. Orders are divided into families Family are divided into a genus Genus are divided into species

Classification Hierarchy of Organisms

The more closely two different species are related, the more levels of classification they share.

To classify organisms, modern taxonomist consider the evolutionary history of the organism.

The fossil record often provides clues to evolutionary relationships

It cannot be read like a story book because some fossil records are incomplete

Taxonomists consider other evidence to confirm information contained within the fossil record with other lines of evidence, like…

……….Comparative Anatomy (Homologous structures, vestigial structures), embryology, DNA, shared chemicals & chemical processes.

Practice using taxonomy classifications to determine

relatedness of different species

Cladogram or

Phylogenetic Tree

• Using patterns of shared traits, biologists construct a branching diagram called a cladogram (or phylogenetic tree.)

• It shows show the sequence in which different groups of organisms evolved

P 36

Phylogenetic trees allow us to predict characteristics of living organisms not yet studied. •The Pacific Yew produces a chemical called taxol that is used in treating cancer. 100,000 lbs of bark would be needed for clinical trials, and bark collection kills the tree. Based on the evolutionary relationships among yew species, biologists expected that close relatives of the Pacific Yew might produce similarly effective compounds

•The leaves of the European Yew contain a related compound that can also be used to efficiently produce Taxol. Taxol is now widely available for cancer treatment.

Which organisms are most closely related?

PracticeGreen plants (viridiplntae) break down into what 2 groups?

Practice In land plants which of the two taxa (groups) is the oldest?

Practice What vascular plant came next?

Practice What type of plants occurred next ?

http://lcmrschooldistrict.com/roth/PowerPoint_Lectures/chapter18/videos_animations/cladogram_interpretation.html

Practice

Phylogenetic Tree Worksheet

Quick Write p33

Summarize 2 types of evidence we have learned and how it is used to classify organisms and support the theory of evolution