WorksheetsAP Bio Microevolution
Total questions: 15
Worksheet time: 9mins
Name
Class
Date
1.
Natural selection is based on all of the following except
a)
genetic variation exists within populations.
b)
populations tend to produce more individuals than the environment can support.
c)
individuals adapt to their environments and, thereby, evolve.
d)
the best–adapted individuals tend to leave the most offspring.
2.
The role that humans play in artificial selection is to
a)
determine who lives and who dies.
b)
choose which organisms breed, and which do not.
c)
train organisms to breed more successfully.
d)
create the genetic variants, which nature then selects.
3.
What is the frequency of the dominant allele in a population of 100 individuals with the following genotypes: 30 BB, 60 Bb, 10 bb?
a)
0.2
b)
0.4
c)
0.6
d)
0.8
4.
Which of the following conditions will cause evolution within a population to occur?
a)
No mutations
b)
Random mating
c)
Natural selection
d)
No gene flow
5.
A mutation can be __________ to an organism.
a)
Beneficial
b)
Neutral in its effect
c)
harmful
d)
All of the above
6.
In a population of red (dominant allele) or white flowers, the frequency of red flowers is 91%. What is the frequency of the red allele?
a)
9%
b)
30%
c)
91%
d)
70%
7.
Which of the following conditions is not needed for natural selection to occur in a population?
a)
Individuals must be able to move between populations.
b)
Variation must be genetically inherited.
c)
Certain variations allow an individual to produce more offspring that survive in the next generation.
d)
There must be variations in the phenotypes of individuals in the population.
8.
If two modern organisms are distantly related in an evolutionary sense, then one should expect that
a)
they should share fewer homologous structures than two more closely related organisms.
b)
their chromosomes should be very similar.
c)
they shared a common ancestor relatively recently
d)
they should be members of the same genus.
9.
Which of the following observations helped Darwin shape his concept of descent with modification?
a)
Species diversity declines farther from the equator.
b)
South American temperate plants are more similar to the tropical plants of South America than to the temperate plants of Europe.
c)
Fewer species live on islands than on the nearest continents.
d)
Birds can be found on islands located farther from the mainland than the birds' maximum nonstop flight distance.
10.
Which of the following principles is NOT part of Darwin’s original theory of evolution by natural selection?
a)
Evolution is a gradual process that occurs over long periods of time.
b)
Variation occurs among individuals in a population.
c)
Mutations are the ultimate source of genetic variation.
d)
Individuals that possess the most favorable variations have the best chance of reproducing.
11.
For a given population that contains genetic variation and is under the influence of natural selection, what is the correct sequence of the following events?
1 Well-adapted individuals leave more offspring
2. A change occurs in the environment.
3. Genetic frequencies within the population change
4. Poorly adapted individuals do not survive
1 Well-adapted individuals leave more offspring
2. A change occurs in the environment.
3. Genetic frequencies within the population change
4. Poorly adapted individuals do not survive
a)
2 -> 4 -> 1 -> 3
b)
2 -> 4 -> 3 -> 1
c)
4 -> 1 -> 2 -> 3
d)
4 -> 2 -> 3 -> 1
12.
Genetic drift is increased by all of the following EXCEPT
a)
small population size
b)
bottleneck effects when the population size is greatly reduced, then recovers
c)
movement of individuals from one isolated population to another
d)
genetic isolation of small groups within a population
13.
For a population in Hardy-Weinberg equilibrium, the frequency of the recessive allele
a)
increases with each generation until it reaches 50%
b)
decreases with each generation until it reaches 25%
c)
remains the same in every generation
d)
increases due to the occurrence of new mutations
14.
An organism’s relative fitness is measured by its
a)
Mutation rate
b)
Contribution to the gene pool of the next generation
c)
Genetic variability
d)
Health and stability in the face of environmental change
15.
Which statement best represents the meaning of the term evolution
a)
Changes in species toward greater complexity over time
b)
Changes in gene frequencies in a population over time
c)
The strongest individuals survive and produce the most offspring
d)
Changes in an individual over time in response to natural selection
100 %
