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WorksheetsBiology, Population Evolution Review
Total questions: 40
Worksheet time: 45mins
Name
Class
Date
1.
One species splitting into two species is called...
a)
Mass extinction
b)
Speciation
c)
Sexual Selection
d)
None of these
2.
A population of pigs lives on an island together with burrowing termites. Pigs that have the longest snouts tend to survive better. Over time, most of the pig population is made up of individuals that have very long snouts. This is an example of which type of selection?
a)
directional selection
b)
disruptive selection
c)
stabilizing selection
3.
Which of the following must occur for speciation to happen?
a)
geographic isolation
b)
reproductive isolation
c)
temporal isolation
d)
behavioral isolation
4.
The lava released by a volcanic eruption separates two populations of a species of monkey. What does this represent?
a)
biological isolation
b)
geographical isolation
c)
temporal isolation
d)
anatomical isolation
5.
Which of the following is an example of reproductive isolation?
a)
two populations of finches that cannot produce viable offspring
b)
two populations of finches that have different feather colors
c)
two populations of salamanders that live in different lakes
d)
two populations of salamanders that have different tail lengths
6.
Which is an example of temporal isolation?
a)
flowers that bloom in different months
b)
birds that have different mating calls
c)
fruit flies that mate in different locations
d)
squirrels that have different fur colors
7.
Gentoo penguins will present a mate with a pebble that they find to attract a mate. Emperor penguins have a specific call and movement that they make to attract a mate. Which type of isolation do these penguins demonstrate?
a)
temporal isolation
b)
behavioral isolation
c)
geographical isolation
d)
anatomical isolation
8.
Which lists the correct sequence of events for evolution to occur through isolation?
a)
founding population arrives, biogeographic isolation occurs, genetic changes occur, reproductive isolation results
b)
genetic changes occur, founding population arrives, reproductive isolation results, biogeographic isolation occurs
c)
biogeographic isolation occurs, founding population arrives, genetic changes occur, reproductive isolation results
d)
founding population arrives, genetic changes occur, biogeographic isolation occurs, reproductive isolation results
9.
A population of chimpanzees was separated when the forest that they lived in had a section cut down and a town was built. After a long period of time, the chimpanzees came back into contact but were incapable of breeding. Which of the following best describes the process that occurred?
a)
adaptation
b)
speciation
c)
convergent selection
d)
stabilizing selection
10.
Which of the following can result in a population looking more similar over time and can be described as selection against both extremes of a trait?
a)
directional selection
b)
stabilizing selection
c)
disruptive selection
d)
species selection
11.
Which of the following is the definition for speciation?
a)
an inherited or learned trait that increases an organism’s chance of survival in its environment
b)
the evolutionary process through which new species emerge
c)
a process by which organisms that are better adapted to their environment tend to survive, reproduce, increase in number, and pass their traits on to succeeding generations
d)
a process by which one of the extreme variations of a trait is favored
12.
Darwin's finches, where one 14 species evolved from a common ancestor is called...
a)
Magic
b)
Adaptive Radiation
c)
Sexual Selection
d)
Hybridization
13.
What do you call all of the genes in a population?
a)
Gene pool
b)
Relative Frequency
c)
Genetic Drift
d)
Allele pool
14.
Genetic drift is:
a)
the sum of all the alleles at all genes in a population.
b)
a significant number of individuals in a population die or are otherwise prevented from breeding.
c)
the change in the frequency of a gene variant (allele) in a population due to random sampling of organisms.
d)
an event that drastically reduces the size of a population.
15.
Which is a mechanism for change in allele frequency?
a)
gene flow
b)
genetic drift
c)
natural selection
d)
all answers are correct
16.
This is an example of
a)
disruptive selection
b)
stabilizing selection
c)
directional selection
d)
sexual selection
17.
Many members of one species in an area
a)
Ecosystem
b)
community
c)
biodiversity
d)
population
18.
Which of the three graphs shows stabilizing selection?
a)
A
b)
B
c)
C
19.
What is the correct explanation for what is happening in this graph?
a)
There are a lot of average-sized beaks
b)
There are no beaks
c)
There are a lot of small beaks only
d)
There are a lot of small and large beaks, but not average-sized ones
20.
A population of pigs with small, medium, and long snouts lives on an island together with burrowing termites. Pigs that have the longest snouts tend to survive better. Over time, most of the pig population is made up of individuals that have very long snouts. This is an example of which type of selection?
a)
directional selection
b)
disruptive selection
c)
stabilizing selection
d)
sexual selection
21.
What is survival of the fittest?
a)
It is where the fittest die out and therefore reproduce and pass on their genes
b)
It is where the fittest die out and therefore can't reproduce and pass on their genes
c)
It is where the fittest don't die out and therefore can't reproduce and pass on their genes
d)
It is where the fittest don't die out and therefore reproduce and pass on their genes
22.
All rabbits living in a particular area would be an example of a(n)
a)
population
b)
species
c)
fossil
d)
individual organism
23.
The purpose of selective breeding is to
a)
Get bigger animals
b)
get smaller animals
c)
create animals with desirable traits
d)
create animals with bad traits
24.
The image you see is a mammoth. Which trait most suggests that the mammoth was adapted to live in a cold climate?
a)
its thick, furry coat
b)
its long, flexible trunk
c)
its sharp, curved tusks
d)
its broad, powerful body
25.
Individuals with favorable traits survive, reproduce, and pass their traits onto their offspring. This is called:
a)
Mutation
b)
Adaptation
c)
Evolution
d)
Natural Selection
26.
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
27.
If finches with large beaks and finches with small beaks increase in a population while finches with average sized beaks decreases, which pattern of natural selection has occurred?
a)
Directional selection
b)
Disruptive selection
c)
Stabilizing selection
28.
Which pattern of natural selection best represents the increasing length of giraffes' necks?
a)
Directional selection
b)
Disruptive selection
c)
Stabilizing selection
29.
Which of the following is true of genetic drift?
a)
It can decrease genetic diversity in a population
b)
It is necessary in order for a population to be in equilibrium
c)
It can increase genetic diversity in a population
d)
It plays a much larger role in determining the genetic makeup of populations than natural selection
30.
There was once a large population of cheetah, but about 12,000 years ago most of the cheetahs were killed off because of human activity and only a few survived. What is this an example of?
a)
Bottleneck Effect
b)
Genetic Drift
c)
Founder Effect
d)
Natural Selection
31.
What profession did Charles Darwin NOT try?
a)
doctor
b)
lawyer
c)
minister
d)
naturalist
32.
Darwin's book was called On the Origin of
a)
individuals
b)
natural selection
c)
species
d)
evolution
33.
Which of the following is NOT evidence of evolution?
a)
homologous structures
b)
gravity
c)
vestigial structures
d)
intermediate fossils
34.
What factor must be in place for natural selection to occur?
a)
struggle for existence (overproduction)
b)
genetically identical individuals
c)
random mating
d)
no immigration or emigration
35.
In natural selection, which individuals will increase in a population over time?
a)
less fit
b)
more fit
c)
deleterious
36.
What does "q" represent in the Hardy-Weinberg Equation?
a)
frequency of dominant alleles
b)
frequency of recessive alleles
c)
frequency of homozygous dominant genotype
d)
frequency of homozygous recessive genotyp
37.
What does the prefix homo- in homozygous mean?
a)
same
b)
different
c)
dating
d)
humans
38.
What does the prefix hetero- in heterozygous mean?
a)
same
b)
different
c)
dating
d)
human
39.
The physical appearance of a trait is known as the-
a)
genotype
b)
phenotype
c)
characteristics
d)
intelligence
40.
This mechanism of evolution occurs when populations migrate.
a)
Extinction
b)
Gene flow
c)
Genetic drift
d)
Natural Selection
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