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Natural Selection Simulation at PHET, Summaries of Environmental science

Environmental science

This is just a worksheet of experience result in PHET

Typology: Summaries

2024/2025

Uploaded on 04/21/2025

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Name:__________________________________________
Natural Selection Simulation at PHET
http://phet.colorado.edu/simulations/sims.php?sim=Natural_Selection (biol.co/2wolf2)
**Exploration of the Simulation
Access the simulation and explore the settings. Answer the following questions.
1. What are some VARIABLES that you have control over in the simulation?
2. What happens to the bunny population if a friend is never added? What happens when you add a friend?
3. What happens when you add food as a selection factor?
4. What is the difference between the arctic and equator environment?
5. What is a genetic mutation? What are the three mutations you can add to your bunny population?
Experiment A - How is the fur color trait influenced by natural selection?
6. Hypothesis: Natural selection will favor traits that ...
How to run the simulator:
1) Add a friend and a brown fur mutation to the bunny population, let the experiment continue to its conclusion.
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Name:__________________________________________

Natural Selection Simulation at PHET

http://phet.colorado.edu/simulations/sims.php?sim=Natural_Selection (biol.co/2wolf2)

**Exploration of the Simulation

Access the simulation and explore the settings. Answer the following questions.

  1. What are some VARIABLES that you have control over in the simulation?
  2. What happens to the bunny population if a friend is never added? What happens when you add a friend?
  3. What happens when you add food as a selection factor?
  4. What is the difference between the arctic and equator environment?
  5. What is a genetic mutation? What are the three mutations you can add to your bunny population?

Experiment A - How is the fur color trait influenced by natural selection?

  1. Hypothesis : Natural selection will favor traits that ... How to run the simulator: 1) Add a friend and a brown fur mutation to the bunny population, let the experiment continue to its conclusion.
  1. Start over and add brown fur mutation (with friend) but add a selection factor of wolves when your bunnies start to get overpopulated. Let the experiment run until you have a clear idea of what is happening with the rabbit and wolf populations.
  2. Change the settings so that you still have brown fur mutations but this time remove the wolves and make the selection factor be food. Let the experiment run until you have a clear idea of what is happening within the population.
  3. Reset and change the settings so that you have brown fur mutation in an arctic environment, use wolves as your selection factor.
  1. Based on the four simulations you ran, describe what happened to your population and answer the experimental question, consider what happens in both environments and what happens when there are no predators. Question: How is the fur color trait influenced by natural selection? Be sure to include the kind of selection that has the most influence (predators or food) and explain why. Provide evidence from the simulation to support your conclusions.

Experiment B - How is tooth length influenced by natural selection?

  1. Following the guidelines from Experiment A, determine when long teeth provide an advantage to the bunny population. Run simulations in a variety of settings. Question: How is tooth length influenced by natural selection? Be sure to include the kind of selection that has the most influence (predators or food) and explain why. Provide evidence from the simulation to support your conclusions.