Living Environment Student Work BSC Lesson # 11 Lesson 11. Looking at Evolutionary Relationships Name: Period ______Date : Laboratory Experience ## Worth ### Lab Minutes Bridge Place pictures up on the SMARTboard labeled. Objective: Use structural evidence to identify evolutionary relationships

Essential Question: What kind of evidence is used to determine relationships? How is it used?

Mini Lesson

P a g e | 1 Living Environment Student Work BSC Lesson # 11 So yesterday we learned that DNA directs the expression of proteins and those proteins in turn give us our traits. Why would those traits be important?

Work Period You will be working at different stations (4) to work to determine the relationship between these organisms using the evidence provided.

Summary What kind of evidence is used to determine relationships? How is it used?

Closing What could you use that would help you to determine a stronger relationship between these three specimens?

P a g e | 2 Living Environment Student Work BSC Lesson # 11 Independence Practice Article on the discovery of Ardi and the thought that he replaced “Lucy” as the missing link with questions.

Name: Period ______Date :

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Lab: Analyzing Evidence for Evolutionary Relationships

Part 1. Structural Evidence

Make observations of the specimens on the screen. Record below.

Question: Who do you think is most closely related? Why?

Prediction/Hypothesis:

Experimental Design: Procedure.

1. There are four stations at the tables on your side of the room. 2. At each station, observe the evidence provided and answer the questions found in the data section for each station. 3. You will have 10 minutes at each station then moved to the next. 4. Complete the data analysis and the evaluation.

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Data Collection:

Station 1. Embryology

Look at the specimens of the human, chimpanzee, and Ardipithecus as they develop in the womb. Use this to determine which two are more closely related and why. Record below.

Hint: Use the traits of each embryo!

Station 2. Comparative Anatomy

Look at the different structures that have been provided to you for the chimpanzee, human, and the Ardipithecus. Based on what you observe, which two do you think are more closely related? Why?

Station 3. Fossils P a g e | 5 Living Environment Student Work BSC Lesson # 11

Look at the different fossils that have been provided to you for the chimpanzee, human, and the Ardipithecus. Based on what you observe, which two do you think are more closely related? Why?

Station 4. Vestigial Structures

Look at the different fossils that have been provided to you for the chimpanzee, human, and the Ardipithecus. Based on what you observe, which two do you think are more closely related? Why?

Type of Evidence Definition Example in the Lab of how this evidence P a g e | 6 Living Environment Student Work BSC Lesson # 11 helped you determine a relationship

Data Analysis:

Evaluation.

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Title of Lab: ______

Exploration

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Identify your Variables Independent Variable:

Dependent Variable:

Prediction/Hypothesis

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Materials:

Procedure:

Data Collection

Data Analysis

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