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WorksheetsEvolution Review
Total questions: 30
Worksheet time: 38mins
Name
Class
Date
1.
In natural selection, the selective agent is the
a)
humans
b)
mutations
c)
breeders
d)
environment
2.
a bird that can easily outcompete other birds for food and that can produce many eggs has a high
a)
life expectancy
b)
mutation rate
c)
fitness
d)
adaptability
3.
which of the following is an example of a vestigial structure?
a)
the wings of a red-tailed hawk
b)
the hind limbs of a house cat
c)
the fins of sharks
d)
the wings of an ostrich
4.
What is suggested by the similarity of early embryos of different species of vertebrates?
a)
no evolutionary relationships between the groups
b)
recent common ancestry
c)
similar environments in the past
d)
evolution froma distant common ancestor
5.
Some organisms that share a common ancestor have features that have different functions, but similar structures. These are known as
a)
vestigial structures
b)
analogous structures
c)
homologous structures
d)
fossil structures
6.
If an organism has a vestigial structure, that structure likely once had a function in a(n)
a)
close relative
b)
early ancestor
c)
unrelated organism
d)
embryological stage
7.
a measure of how commonly a particular allele occurs in a population is known as the
a)
gene pool
b)
allele frequency
c)
mutation rate
d)
phenotype
8.
Genetic variation can arise from a random change in the DNA of a gene. The change is called a(n)
a)
mutation
b)
gene flow
c)
gene pool
d)
allele
9.
What increases genetic variation when animals move from one population to another
a)
genetic drift
b)
sexual selection
c)
bottleneck effect
d)
gene flow
10.
What is speciation?
a)
combining of two species to form one with different traits
b)
isolation that affects mating behaviors
c)
timing of mating that prevents normal sexual selection
d)
divergence of two or more species from an existing one
11.
An earthquake causes an ocean channel top open and separate an island into two. the species on each section are now in
a)
geographic isoliation
b)
behavioral isolation
c)
disruptive selection
d)
temporal isolation
12.
What kid of isolation occurs when two populations of birds have different courtship dances?
a)
geographic
b)
sexual
c)
temporal
d)
behavioral
13.
two species are in different environments and look very similar. However, that are not closely related (analogous). Their resemblance is most likely an example of.
a)
sexual selection
b)
temporal isolation
c)
convergent evolution
d)
divergent evolution
14.
Other insects can not, but, a bumble bee has just enough weight to open up the snapdragon flower and pollinate. This adaption is ....
a)
convergent evolution
b)
co-evolution
c)
divergent evolution
d)
speciation
15.
the hind leg bones in a whale are examples of
a)
homologous structures
b)
analogous structures
c)
fossils
d)
vestigal structures
16.
combined alleles of all individuals in a population is called
a)
phenothype
b)
gene pool
c)
mutation rate
d)
allele frequency
17.
what type of isolation occurs which the timing of reproduction is different between two populations?
a)
geographic
b)
temporal
c)
behavioral
d)
selective
18.
What type of genetic drift occurs when the population size is greatly decreased?
a)
Founder's Effect
b)
Bottleneck Effect
c)
Intrasexual Selection
d)
Intersexual Selection
19.
Which of the following explains how natural selection causes a trait to become predominant in a population?
a)
Individuals with traits that are favorable to the environment reproduce more.
b)
Traits of an individual change in order to adapt to changes in enviornment.
c)
organisms select which traits they wish to inherit
d)
all of these answers
20.
Which of the following is an example of gene flow?
a)
A subordinate wolf successfully challenges the alpha male and mates with pack females
b)
A deer picks up spores from a plant as it grazes and deposits them next to that plant.
c)
A young stallion is driven out of its herd by the alpha stallion and begins its own herd in another location
d)
All of these answers
21.
A population moving from on place to another.
a)
speciation
b)
geographic isolation
c)
genetic drift
d)
migration
22.
Scientist who proposed the theory of Natural Selection.
a)
Hardy
b)
Weinburg
c)
Darwin
d)
Einstein
23.
A chance occurrence that negatively affects a population because the population is small.
a)
genetic drift
b)
mutation
c)
speciation
d)
migration
24.
Which of the three graphs shows directional selection?
a)
A
b)
B
c)
C
25.
Which of the three graphs shows stabilizing selection?
a)
A
b)
B
c)
C
26.
Which of the three graphs shows disruptive selection?
a)
A
b)
B
c)
C
27.
If the number of the darkest colored rock pocket mice that live on the lava flow has increased and the number of tan mice living in the same area has decreased, which pattern of natural selection has occurred?
a)
Directional selection
b)
Disruptive selection
c)
Stabilizing selection
28.
If finches with average sized beaks increase in a population while finches with large and small sized beaks decrease, which pattern of natural selection has occurred?
a)
Directional selection
b)
Disruptive selection
c)
Stabilizing selection
29.
Which pattern of natural selection best represents the increasing length of giraffes' necks?
a)
Directional selection
b)
Disruptive selection
c)
Stabilizing selection
30.
The five-factors of speciation are gene flow, genetic drift, mutation, natural selection and ....
a)
sexual selection
b)
controlled mating
c)
emigration
d)
immigration
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