Download Which statement best states the effect of this movement of the brown

Biology I
Formative Assessment #8
Multiple Choice
Directions: Identify the choice that best completes the statement or answers the question.
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1. The illustration below depicts what might happen to bacteria when introduced to antibiotics.
.
University of California Museum of Paleontology's Understanding Evolution (http://evolution.berkeley.edu)
Which of the mechanisms for evolution is represented in the illustration?
A.
B.
C.
D.
Mutation
Gene flow
Genetic drift
Natural Selection
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2. Natural selection is the process by which biological traits either become more or less
apparent within a population. There are certain conditions which are the basis for natural
selection. Which of the following examples best represents the adaptation of a species to its
environment.
A. Male Birds of Paradise inherit brilliant colors which they displayed in elaborate poses or
dances in order to catch the attention of a female mate.
B. Female Loggerhead turtles lay about 100 eggs, which when hatched produce offspring that
must make a mad dash to the ocean before being eaten by predatory sea birds.
C. A species of crab is living and reproducing successfully near hot hydrothermal vents at the
bottom of the Pacific Ocean, while other crab species are unable to survive there.
D. Some members of a garter snake species are resistant to a toxin produced by one of its food
sources and will successfully reproduce and pass the resistant trait on to their offspring.
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Biology I
Formative Assessment #8
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3. Some organisms, such as fish and mosquitoes, produce very large numbers of offspring.
Why is producing a large number of offspring important for natural selection?
A. It helps to reduce the population sizes of other species by increasing competition for
limited resources within an environment.
B. It provides the offspring protection from predators because predators never attack a large
group of offspring.
C. It minimizes genetic variation by increasing the number of individuals that are genetically
identical.
D. It increases the chance that enough individuals will survive to become adults and
reproduce.
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4. Which of the following best states a condition which promotes natural selection of a
species?
A.
B.
C.
D.
One baby albino alligator, from a nest of 20 eggs, hatches in the Florida Everglades.
The population of moths in a forest increased from 100 to 150 members.
An ocean ecosystem consists of more algae than fish species.
A female cat has a litter of 5 kittens instead of 6.
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5. Two squirrel populations are said to have very little gene flow. What will most likely
happen to these populations?
A.
B.
C.
D.
The populations will evolve at the same rate.
The populations will evolve separately from each other.
Both populations will develop the same ratio of alleles.
There will be an increase in diversity within both populations.
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6. Which of the following best represents genetic drift?
A. The remaining few breeding members of a herd of horses after a disease killed off the
others.
B. A population of insects which mate with members of another nearby insect population.
C. A group of caribou isolated by an avalanche from their herd for one winter.
D. Bees that fly from farm to farm pollinating the crops.
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Biology I
Formative Assessment #8
SC.912.L.15.14
7. The illustration below shows the movement of a brown beetle (right side of the diagram)
into a population of green beetles (left side of the diagram). The brown beetle begins to
mate with the green beetles.
http://qph.is.quoracdn.net/
Which statement best states the effect of this movement of the brown beetle?
A.
B.
C.
D.
Only the green beetle population will show any changes in phenotypes.
Only the future generations of the brown beetle population will be effected.
A decrease in genetic diversity will occur in both the green and brown populations.
An increase in genetic diversity will occur in both the green and brown beetle
populations.
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8. Crossing over increases diversity in species, however, there are situations which result in an
increased probability that crossing over will occur. How will crossing over most likely occur
between the homologous chromosomes shown?
A.
B.
C.
D.
a and e will cross over together with A and E
bc will cross over with BD
DE will cross over with de
ABC will cross over with cde
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Biology I
Formative Assessment #8
SC.912.L.15.15
9. Which statement correctly explains how recombination increases genetic variation?
A. During prophase of mitosis, chromosomes exhibit crossing over by exchanging genes from
one homologous chromosome to another.
B. During meiosis I, paired replicated homologous chromosomes line up along the center of
the cell.
C. A parent has 2 alleles for a trait and these alleles are inherited separately.
D. After cytokinesis, sister chromatids exchange genetic information.
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10. Which of the following processes results in the least amount of genetic variation among
offspring.
A.
B.
C.
D.
Independent Assortment
Segregation of alleles
Crossing oveR
Meiosis
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Biology I
Formative Assessment #8
Biology I Formative Assessment #8
Answer Key
Answer
Correct Answer
Benchmark
DOK
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
D
C
D
A
B
A
A
C
A
B
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2
2
2
2
2
2
2
2
2
2
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