Natural and Artificial Selection
Click and Learn app – 3rd screen on app
1st screen
1. Watch the video. What kind of organisms will leave more offspring?
2nd screen
2. What is artificial selection?
3. Watch the 1st video. What are some examples of traits the humans have
selected in dog breeding?
4. For how many generations do dog breeders choose the parents?
5. Watch the 2nd video. In looking at the skeletons of the 2 dogs, would a
paleontologist have identified them as members of the same species? Why or
why not?
3rd screen
6. Watch the video. What bones have been reduced in the sticklebacks?
4th screen
7. Watch the video. Why might it be better or worse for some sticklebacks to
have or lose their armor in some environments?
5th screen
8. Watch the 1st video. How does lava affect the environment of the deserts in
the American southwest?
9. What are the 2 varieties of rock pocket mice?
10. How does color matching matter?
6th screen
11. Watch the video. How quickly can changes in plants and animals be
generated?
12. How can things change so quickly?