Name: __________________________________
Natural Selection and Selective Breeding Online Labs
Purpose: Students will identify genetic changes that species have undergone
and what condition caused those changes.
Students will be able to compare selective breeding to natural selection
Directions: Please visit Ms. Cervantes’ website and use the Natural Selection Lab tab
to answer the questions below.
Lab #1: Natural Selection
http://phet.colorado.edu/en/simulation/natural-selection
1. Scenario 1. What happened? Why?
2. Scenario 2. What happened? Why?
3. Scenario 3. What happened? Why?
4. Scenario 4. What happened? Why?
5. Scenario 5. What happened? Why?
Lab #2: Natural Selection and Antibiotic Resistant Bacteria
http://sciencenetlinks.com/interactives/antibiotic.html
7. Why won’t you normally give the strongest antibiotic first to fight off infection?
______________________________________________________________
8. A stronger antibiotic might be ____________________.
9. A stronger antibiotic might have more ____________ _______________,
making you feel bad.
10.
Use the same anti bacteria too often, there is a chance a _____________
strains will take over.
11.
If bacteria becomes resistant to a drug, then that drug
__________________________________________.
Name: __________________________________
Lab #3: Charles’ Darwin
http://www.sciencechannel.com/games-and-interactives/charles-darwin-game/
12.
Play the survival game:
A ______________________ is a genetic characteristic among similar
organisms in a species.
What was the purpose of the survival game?
____________________________________________________________________
____________________________________________________________________
Record your Quiz Score: _________________
Lab #4: brain pop- Natural Selection
https://www.brainpop.com/science/ecologyandbehavior/naturalselection/
Watch the movie Natural Selection at the BrainPop website then answer these
questions.
13.
How does natural selection work?________________________________
13.
What is a species?
______________________________________________________________
14.
What happens after long periods of natural selection?
Take the Quiz (Classic Form). Raise your hand to have your score checked by
your teacher: Record your Quiz ___________________
Name: __________________________________
Lab 6:
http://peppermoths.weebly.com
15.
Impact of pollution: What was causing the different colors in the moths?
________________________________________________________
16.
Kettlewells’s experiment: 8. Why did dark moths have a survival
advantage?
___________________________________________________________
17.
When Kettlewell recaptured the marked moths, what did he find?
________________________________________________________
Birds eye view:
Open the simulation and play the role of the bird in both the dark and the light forest.
Try to behave as a bird would behave, choosing the moths that are the most obvious.
At the end of each simulation, record the percent of moths captured in the table below.
Final analysis:
21.
Explain how the color of the moths increases or decreases their chances of
survival.______________________________________________________________
____________________________________________________________________
23. Explain the concept of "natural selection" using your moths as an example.
____________________________________________________________________
____________________________________________________________________
24. What would happen if there were no predators in the forest? Would the colors of
the moths change over time? Defend your answer?
____________________________________________________________________
____________________________________________________________________
Name: __________________________________
Lab 5: nowhere to hide
http://sciencenetlinks.com/media/filer/2011/10/07/evolution.swf
The goal of this activity is to observe what happens to the bugs (green and
orange) in response to an increase or decrease in pollution levels (the color of
the background). Once you are finished playing the game, click on the "Learn
More" button to read about the science and history behind the game. 18.
Which bugs (orange or green) were eaten more when there was a low level
of pollution (background green)? ________________________________
19. Which bugs (orange or green) were eaten more when there was a high level
of pollution (background orange)?
_________________________________
20. What factor determined the survival of the bug? Why? ___________________________________________________________
21. If the pollution level is high for an extended period of time, does this affect
the survival of the green bugs? Yes or No. 22. Would they increase or decrease over time? ____________________
23. In natural selection, the organisms that are best suited to survive in an
environment have the most babies and grow in numbers, while organisms
that aren't as well suited to the environment shrink and disappear. True or
False. Do you think this process occurs over a short period of time or a long period of
time?