Vi b

labB.docx

2

PhET Natural Selection Lab

For this assignment, you will explore a simulation program, collect data, and report your findings in a worksheet linked below.

Simulation Interaction

Access the PhET Natural Selection Lab ( https://phet.colorado.edu/sims/html/natural-selection/latest/natural-selection_all.html )

· Go to the Intro section. Explore and play around. Take note of what kind of data is available to you. What variables can you change and adjust?

· The simulation starts off with only one bunny.

· Press the blue play button if you do not see the one bunny hopping and then add a mate. The simulation will start running. Observe what’s happening. You should be seeing the population numbers being charted in the graph as each generation passes.

Tips:

· Pressing and holding the fast-forward button will speed up the process.

· You can adjust the scale of the Y-axis [Population] by pressing the + and – buttons as the populations grows.

· Click the arrows on either side of Generations to move the chart back and forth as needed.

· Use the Data Probe option to slide across the X-axis in order to view specific population #s for each generation.

· Observe the changes taking place from one generation to the next. Let the simulation run for at least 6 generations. Note what happens at generation 6.

Environmental Factors: Following the instructions below, and run the simulation for each scenario. Use the Excel Spreadsheet embedded in the worksheet to record your data.

Limited Food

· You will now consider changing abiotic and biotic environmental factors.

· Start a new simulation: Press the orange start over button on the bottom right.

· Add a mate and check the Limited Food box.

· Run for 10 generations.

· Record the number of bunnies at the start of each generation in your data sheet. Remember to click the Data Probe box. Once the 10 generations have run, drag the Data Probe along the graph from one generation to the next, entering the number of bunnies for each generation. To get the best count for teach generation, slide the data probe just past the generation number.

Wolves

· Start a new simulation: Press the orange start over button on the bottom right.

· Add a mate and after 4 generations check the Wolves box. Do not check the Limited Food box.

· Run for 10 generations.

· Record the number of bunnies at the start of each generation as you did in the previous step.

Wolves + Mutation

· Start a new simulation: Press the orange start over button on the bottom right.

· Add a mate and select the brown fur mutation (i.e. click the brown fur under “Recessive”).

· After 4 generations check the Wolves box. Do not check the Limited Food box.

· Run for 10 generations.

· Record the number of bunnies at the start of each generation.

· Optional: You may parse out the differences between white fur and brown fur within your total population data. To do this, check the white fur and brown fur boxes. *White fur will show up as a solid green line, and brown fur will be a dotted green line.

Deliverable: Open the Unit VI PheT Natural Selection Lab (worksheet attached). In the worksheet, you will create a line graph using the data you have collected that shows how population numbers increased or decreased for each scenario. You will also answer 4 questions concerning the data. Each answer should be at least 200 words each.

UnitVIPhETNaturalSelectionLabWorksheet.docx

Natural Selection Lab

Name:

Student ID:

Bunny Population Line Graph:

(Go to Insert, Chart, Line, and then click okay. From there you can design the line chart as you like. Your line chart should use the data you have collected that shows how poulation numbers increaed or decreased for each scenario. Remove these directions.)

To change data in your graph, double click on the graph, then click Chart Design on the ribbon, and then click Edit Data in Excel.

Questions:

1. When you ran the simulation without any limiting factors in the introduction, what happened?

Answer ___

a. The bunny population went through a boom-and-bust cycle.

b. The bunny population exploded, and the simulation ended.

c. The bunny population declined slowly over many generations.

d. The bunny population exhibited a logarithmic growth pattern.

2. Of the three scenarios (limited food, wolves and wolves + mutation), which seems best for growth and stability of the bunny population?

Answer ___

a. Bunny population with limited food

b. Bunny population with wolves

c. Bunny population with wolves + mutation

3. If necessary, run the simulation of the bunnies and wolves again, paying attention to the number of wolves each time. What was unrealistic about the wolf numbers? What would you expect to happen to the wolf numbers over time in a scenario like this? Answer in complete sentences.

Answer:

4. What was the effect of having a diverse color rabbit population when there was a limiting factor? What does this tell you about the importance of genetic variation? Answer in complete sentences.

Answer:

Bunny Population Growth With and Without Genetic Variation

Population #s with limited food 1 2 3 4 5 6 7 8 9 10 6 18 54 162 319 283 313 312 283 270 Population #s with wolves 1 2 3 4 5 6 7 8 9 10 6 18 54 162 43 13 1 0 0 0 White Bunnies - Population #s with wolves and mutation 1 2 3 4 5 6 7 8 9 10 6 18 53 19 44 20 6 3 3 3 Brown Bunnies - Population #s with wolves and mutation 1 2 3 4 5 6 7 8 9 10 0 0 2 5 11 17 31 51 51 99

labB.docx

2

PhET Natural Selection Lab

For this assignment, you will explore a simulation program, collect data, and report your findings in a worksheet linked below.

Simulation Interaction

Access the PhET Natural Selection Lab ( https://phet.colorado.edu/sims/html/natural-selection/latest/natural-selection_all.html )

· Go to the Intro section. Explore and play around. Take note of what kind of data is available to you. What variables can you change and adjust?

· The simulation starts off with only one bunny.

· Press the blue play button if you do not see the one bunny hopping and then add a mate. The simulation will start running. Observe what’s happening. You should be seeing the population numbers being charted in the graph as each generation passes.

Tips:

· Pressing and holding the fast-forward button will speed up the process.

· You can adjust the scale of the Y-axis [Population] by pressing the + and – buttons as the populations grows.

· Click the arrows on either side of Generations to move the chart back and forth as needed.

· Use the Data Probe option to slide across the X-axis in order to view specific population #s for each generation.

· Observe the changes taking place from one generation to the next. Let the simulation run for at least 6 generations. Note what happens at generation 6.

Environmental Factors: Following the instructions below, and run the simulation for each scenario. Use the Excel Spreadsheet embedded in the worksheet to record your data.

Limited Food

· You will now consider changing abiotic and biotic environmental factors.

· Start a new simulation: Press the orange start over button on the bottom right.

· Add a mate and check the Limited Food box.

· Run for 10 generations.

· Record the number of bunnies at the start of each generation in your data sheet. Remember to click the Data Probe box. Once the 10 generations have run, drag the Data Probe along the graph from one generation to the next, entering the number of bunnies for each generation. To get the best count for teach generation, slide the data probe just past the generation number.

Wolves

· Start a new simulation: Press the orange start over button on the bottom right.

· Add a mate and after 4 generations check the Wolves box. Do not check the Limited Food box.

· Run for 10 generations.

· Record the number of bunnies at the start of each generation as you did in the previous step.

Wolves + Mutation

· Start a new simulation: Press the orange start over button on the bottom right.

· Add a mate and select the brown fur mutation (i.e. click the brown fur under “Recessive”).

· After 4 generations check the Wolves box. Do not check the Limited Food box.

· Run for 10 generations.

· Record the number of bunnies at the start of each generation.

· Optional: You may parse out the differences between white fur and brown fur within your total population data. To do this, check the white fur and brown fur boxes. *White fur will show up as a solid green line, and brown fur will be a dotted green line.

Deliverable: Open the Unit VI PheT Natural Selection Lab (worksheet attached). In the worksheet, you will create a line graph using the data you have collected that shows how population numbers increased or decreased for each scenario. You will also answer 4 questions concerning the data. Each answer should be at least 200 words each.

UnitVIPhETNaturalSelectionLabWorksheet.docx

Natural Selection Lab

Name:

Student ID:

Bunny Population Line Graph:

(Go to Insert, Chart, Line, and then click okay. From there you can design the line chart as you like. Your line chart should use the data you have collected that shows how poulation numbers increaed or decreased for each scenario. Remove these directions.)

To change data in your graph, double click on the graph, then click Chart Design on the ribbon, and then click Edit Data in Excel.

Questions:

1. When you ran the simulation without any limiting factors in the introduction, what happened?

Answer ___

a. The bunny population went through a boom-and-bust cycle.

b. The bunny population exploded, and the simulation ended.

c. The bunny population declined slowly over many generations.

d. The bunny population exhibited a logarithmic growth pattern.

2. Of the three scenarios (limited food, wolves and wolves + mutation), which seems best for growth and stability of the bunny population?

Answer ___

a. Bunny population with limited food

b. Bunny population with wolves

c. Bunny population with wolves + mutation

3. If necessary, run the simulation of the bunnies and wolves again, paying attention to the number of wolves each time. What was unrealistic about the wolf numbers? What would you expect to happen to the wolf numbers over time in a scenario like this? Answer in complete sentences.

Answer:

4. What was the effect of having a diverse color rabbit population when there was a limiting factor? What does this tell you about the importance of genetic variation? Answer in complete sentences.

Answer:

Bunny Population Growth With and Without Genetic Variation

Population #s with limited food 1 2 3 4 5 6 7 8 9 10 6 18 54 162 319 283 313 312 283 270 Population #s with wolves 1 2 3 4 5 6 7 8 9 10 6 18 54 162 43 13 1 0 0 0 White Bunnies - Population #s with wolves and mutation 1 2 3 4 5 6 7 8 9 10 6 18 53 19 44 20 6 3 3 3 Brown Bunnies - Population #s with wolves and mutation 1 2 3 4 5 6 7 8 9 10 0 0 2 5 11 17 31 51 51 99

labB.docx

2

PhET Natural Selection Lab

For this assignment, you will explore a simulation program, collect data, and report your findings in a worksheet linked below.

Simulation Interaction

Access the PhET Natural Selection Lab ( https://phet.colorado.edu/sims/html/natural-selection/latest/natural-selection_all.html )

· Go to the Intro section. Explore and play around. Take note of what kind of data is available to you. What variables can you change and adjust?

· The simulation starts off with only one bunny.

· Press the blue play button if you do not see the one bunny hopping and then add a mate. The simulation will start running. Observe what’s happening. You should be seeing the population numbers being charted in the graph as each generation passes.

Tips:

· Pressing and holding the fast-forward button will speed up the process.

· You can adjust the scale of the Y-axis [Population] by pressing the + and – buttons as the populations grows.

· Click the arrows on either side of Generations to move the chart back and forth as needed.

· Use the Data Probe option to slide across the X-axis in order to view specific population #s for each generation.

· Observe the changes taking place from one generation to the next. Let the simulation run for at least 6 generations. Note what happens at generation 6.

Environmental Factors: Following the instructions below, and run the simulation for each scenario. Use the Excel Spreadsheet embedded in the worksheet to record your data.

Limited Food

· You will now consider changing abiotic and biotic environmental factors.

· Start a new simulation: Press the orange start over button on the bottom right.

· Add a mate and check the Limited Food box.

· Run for 10 generations.

· Record the number of bunnies at the start of each generation in your data sheet. Remember to click the Data Probe box. Once the 10 generations have run, drag the Data Probe along the graph from one generation to the next, entering the number of bunnies for each generation. To get the best count for teach generation, slide the data probe just past the generation number.

Wolves

· Start a new simulation: Press the orange start over button on the bottom right.

· Add a mate and after 4 generations check the Wolves box. Do not check the Limited Food box.

· Run for 10 generations.

· Record the number of bunnies at the start of each generation as you did in the previous step.

Wolves + Mutation

· Start a new simulation: Press the orange start over button on the bottom right.

· Add a mate and select the brown fur mutation (i.e. click the brown fur under “Recessive”).

· After 4 generations check the Wolves box. Do not check the Limited Food box.

· Run for 10 generations.

· Record the number of bunnies at the start of each generation.

· Optional: You may parse out the differences between white fur and brown fur within your total population data. To do this, check the white fur and brown fur boxes. *White fur will show up as a solid green line, and brown fur will be a dotted green line.

Deliverable: Open the Unit VI PheT Natural Selection Lab (worksheet attached). In the worksheet, you will create a line graph using the data you have collected that shows how population numbers increased or decreased for each scenario. You will also answer 4 questions concerning the data. Each answer should be at least 200 words each.

UnitVIPhETNaturalSelectionLabWorksheet.docx

labB.docx

UnitVIPhETNaturalSelectionLabWorksheet.docx

labB.docx

UnitVIPhETNaturalSelectionLabWorksheet.docx