Download Natural Selection Worksheet

Crash Course in Biology #14
Name _______________________ Date ______________ Per __
- Natural Selection and Population Growth
1. At the start of the industrial revolution, _____________ of the peppered moths in London were black.
2. By __________, ____________ of the peppered moths in London were black.
3. Natural selection is the process by which certain _______________________________ make it easier
4. for some individuals to ___________________ and ____________________ , changing the
5. _____________________________________of ______________________ over time.
6. Charles Darwin’s _______ book was titled ___________________________________________________.
7. Lots of factors play roles in how species change over time including ________________________,
8. ______________________, and the process of _______________________________.
9. Natural selection is the most powerful and important cause of ___________________________________.
10. Name 3 things Darwin studied: ___________________, __________________, and _________________.
11. Darwin formulated his theory during a voyage on the _________________________ in the ___________.
12. What is an adaptation?
13. Darwin studied the beaks of ____________ in the Galapagos Islands found where?
14. In evolutionary terms, what is fitness?
15. First principle of natural selection:
16. Second principle:
17. Third principle:
18. Darwin called this the “____________________________________________”
19. Darwin’s overpopulation idea was inspired by economist __________________________________.
20. For about every ___ people who die, about ___ are born, so the world’s population is growing at _____/sec.
22. Three things created by overpopulation: _____________________, __________________ and _________.
23. It took humanity _________________ years to go from 0 to ______________________ people,
24. then to ______________________ people in ____________ years.
25. What is a “youth bulge”?
26. Fourth principle of natural selection:
27. _______________ do not evolve, natural selection changes the genetic composition of ________________.
28. A phenotype is:
29. A genotype is:
30. Directional selection definition and example:
31. Stabilizing selection definition and example:
32. Disruptive selection definition and example:
33. Considering sexual selection, list two ways that males use to increase opportunities to mate with females:
(a)
(b)
34. The increase in size of peacock tails is due to ________________________ sexual selection.
35. The __________ wolf was bred to form dogs through the process of _____________________ selection.