Evolution Exam Review
Name___Key_____________
1.
2.
3.
4.
5.
6.
7.
8.
9.
Write the definition of gene flow: exchange of genes between populations
Write the definition of genetic drift: loss of genes due to chance
What is behavioral isolation? Isolation due to difference in mating rituals
Give an example of behavioral isolation: fireflies blink their lights in different
patterns
What is geographical isolation? Isolation due to physical barriers
Give an example of geographical isolation: river or mountain range separates a
population
Write the definition of an adaptation: inherited characteristic that increases an
organisms’ chance of survival
What are two other terms used for differential reproductive success? Survival of
the fittest, and natural selection
Write whether the statement is true or false for the following statements. If it is
false, correct it so that it is true.
a. Beneficial traits are inherited and passed down from generation to
generation true
b. More useful traits become less more common in populations
c. Genetic composition changes from generation to generation true
d. Organisms cannot change their genes to adapt to their environment
e. Evolution is on a population individual basis
10. Define gene pool: all the genes in a population
11. Which of the following is true about adaptations?
a. Species only adapt if they decide to adapt
b. Variation is caused by only one factor
c. Adaptation leads to changes in a species
d. Species adapt to the environment on an individual basis
12. What is stabilizing selection? The “medium” trait is favored
13. Draw a graph that represents stabilizing selection: look on board
14. What is disruptive selection? Both extremes of a trait are favored
15. Draw a graph that represents disruptive selection: look on board
16. What is directional selection? One extreme of a trait is favored
17. Draw a graph that represents directional selection: look on board
18. Which of the following species are more closely related?
Species A:
ATCGCCCAT
Species B: AATCGAGAT
Species C:
ATGCCCGAT
Species D: AGGGCGGCT
19.
Animal Name
Carp
Elephant
Lizard
Frog
Location of Reproduction
Water
Land
Land
Water
Which of the following are more likely related, according to the chart above:
a.
b.
c.
d.
Carp and Lizard
Carp and Elephant
Carp and Frog
Elephant and Frog
20. Which of the following is least likely to be used to determine if different species are related?
a. Body Structures
b. Breeding Trials
c. Color
d. DNA
21. Which of the following is most likely to be used to determine if different species are related?
a. Body Structures
b. Breeding Trials
c. Color
d. DNA
Use for questions 23 and 25
A.
B.
C.
D.
E.
Whale Flipper
Fish Fin
Human Arm
Bird Wing
Bat Wing
22. Write the definition for analogous structures: same trait, same function, but came from
different parts
23. Which are analogous structures? Fish fin and whale flipper
24. Write the definition for homologous structures: same trait, different function, but came
from the same part
25. Which are homologous structures? Whale flipper, human arm, bird wing, bat wing
26. What was the purpose of the Miller-Urey experiment? Proved that early Earth had all the
ingredients to make amino acids
27. What is the endosymbiotic theory? Chloroplasts and mitochondria were once prokaryotic
cells
28. Define sudden appearance: a species or trait SUDDENLY APPEARS
29. Define stasis: no change
30. Define convergent evolution: the species develop the same trait, but independently of
each other
31. Define coevolution: two species evolve together due to their interactions
32. List three embryological features that appear in most animals: fur, tail, gills