HAPPY WEDNESDAY Bellwork: Draw the organisms below and explain how do you know where the organisms live.

2nd Semester To-Do List

• CHAMPS• Cell Phones/Headphones• Required Materials–Kleenex–Notecards

Take a few minutes and copy this word map into your notes.

Evidence of Evolution

Fossil Record

EmbryonicMolecular Anatomical

Homologies = SAME

Biogeography

The word Homologies refers to similarities among organisms

HOMO = SAME

There are three types of homologies that provide strong evidence for evolution and common ancestry

Take a few minutes and copy this word map into your notes.

Evidence of Evolution

Fossil Record

EmbryonicMolecular Anatomical

Homologies Biogeography

3. Anatomical Homologies: bones and muscles of different species that have similar structures but perform different functions

Take a few minutes and copy this word map into your notes.

Evidence of Evolution

Fossil Record

EmbryonicMolecular Anatomical

Homologies Biogeography

2. Embryonic Homologies: Different organisms develop from similar starting forms (embryos)

4. Embryonic Homologies: Different organisms develop from similar starting forms (embryos)

Take a few minutes and copy this word map into your notes.

Evidence of Evolution

Fossil Record

EmbryonicMolecularAnatomical

Homologies Biogeography

1. Molecular Homologies: similarities in DNA sequences among different organisms

Because organisms evolved from a common ancestor, we find similarities in the DNA sequence of all living organisms. The more of a DNA match we see, the closer of a relationship the organisms have.

The chart below compares the base sequences of homologous segments of DNA from various

primates. Based on this data, which primate is the least closely related to humans?

Homework tonight: Cladograms by Bozeman Science

Cornell Notes plus you MUST draw the cladogram

Periods 4 & 5HW: Cladograms

Search for the YouTube video “Cladograms”

by Bozeman Science.

Periods 4 & 5: Complete on Page 49 of your I.A.N. using Cornell Notes. Due TOMORROW.

https://www.youtube.com/watch?v=ouZ9zEkxGWg

A. Copy ONE of Mr. Anderson’s cladograms below:

B. Draw an arrow on your cladogram to show TIME.

C. Answer the following questions about your cladogram:

1. Which two organisms are the most closely related?

2. Which two organisms are the least closely related?

3. Which branch represents the most recent (youngest)

organism?

4. Which branch represents the oldest organisms?

5. What do the branching points represent (where two

branches go in different directions)?