Download Chapter 17/19.3

Learning Targets
Name___________________________
Chapter 17 & 19.3 : Evolution of Populations
Period___
1. How is evolution defined in genetic terms?
2. What are the sources of evolution?
a)
b)
c)
3. What determines the number of phenotypes for a given trait?
4. How does natural selection affect single-gene and polygenic traits?
Single-Gene Traits
Polygenic Traits
Directional Selection
Stabilizing Selection
Disruptive Selection
Learning Targets
Name___________________________
Chapter 17 & 19.3 : Evolution of Populations
Period___
5. What is genetic drift?
6. Explain how the following contributes to genetic drift:
Genetic Bottlenecks
The Founder Effect
7. What conditions are required to maintain genetic equilibrium?
a)
b)
c)
e)
f)
Learning Targets
Name___________________________
Chapter 17 & 19.3 : Evolution of Populations
Period___
8. What types of isolation lead to the formation of new species?
a)
b)
c)
d)
9. What is a current hypothesis about Galapagos finch speciation?
a)
b)
c)
d)
e)
10. What are molecular clocks?
11. Where do new genes come from?
12. How may Hox genes be involved in evolutionary change?
Learning Targets
Name___________________________
Chapter 17 & 19.3 : Evolution of Populations
Period___
13. What do scientists hypothesize about early Earth and the origin of life?
14-19. What theory explains the origin of eukaryotic cells? Draw, color and label the
Endosymbiotic Theory in fig. 19-18 page 557.
20. What is the evolutionary significance of sexual reproduction?