1
Biology 1108 Questions with Answers (100% Correct
Answers)
In general, in a sample of n individuals, the frequency of an allele is:
Answer: the number of occurrences of the allele divided by
twice the number of individuals in the sample (2n)
In a population of Mendel's garden peas, the frequency of dominant
yellow-flowered plants is 50%. The population is in Hardy-Weinberg
equilibrium. From this information alone, you can determine the allele
frequencies (A=p and a=q). T/F Answer: True.
If a population is not in Hardy-Weinberg equilibrium, we can conclude
that: Answer: evolution has occurred because one of the assumptions of
the Hardy-Weinberg equilibrium has been violated.
The goldenrod gall fly lays its eggs on the terminal buds of goldenrod
plants. Larvae chew through the buds and into the stems, where their
saliva induces the plant to generate a gall, or outgrowth of tissue that
then provides food and shelter for the developing larva. The larvae are
prey to both parasitoid wasps and to birds; wasps selectively prey on
larvae inside the smallest galls while birds selectively prey on larvae
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inside the largest galls. Golden gall flies are therefore subject to: Answer:
stabilizing selection
Which big sagebrush plant is the most fit, based on the information
presented? Answer: The individual that produces 3% more offspring each
year than others in its population.
On a hike through the forest, you notice a population of 100 flowering
plants that all look identical (phenotypic clones). They span an area of
approximately 100 square meters. You take some representatives from
one corner of their distribution back to the lab, sequence their DNA and
conclude that they are genetoc clones. T/F.
This population can evolve.
This population can only evolve through genetic drift.
This population can only evolve through natural selection. Answer: True.
False.
False.
You find that a wild population of antelope is not in HWE. From this
information alone, can you determine the mechanism of evolution
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,3
operating on the population? Answer: No, HWE does not inform us as to
the mechanism of evolutionary change, it only informs us as to whether
or not evolution is happening.
The only evolutionary process that leads to adaptive change is: Answer:
natural selection
What does it mean to say that an allele is "fixed" in the population?
Answer: It is an indication of no genetic variation at that locus in the
population.
Two organisms are part of the same population if: Answer: they are the
same species and are in the same geographic area.
Why can't we measure genetic variation in a population using
phenotypes? Answer: The environment can also affect the phenotype.
A snowshoe hare produces a white coat during the winter, allowing it to
better hide from predators. White-coated hares have thrived and a
majority of snowshoe hares in the population now produce white coats.
Based on this, which of the following statements are definitely true?
Answer: The alleles for a white winter coat increased over time.
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, 4
According to the BCS (Biological Species Concept), two individuals are
members of the same species if: Answer: they can produce fertile
offspring.
The intricate plumage of a male Bird of Paradise has become increasingly
elaborate throughout their evolution due to females mating
preferentially with males that display the most impressive feathers. This is
an example of: Answer: sexual selection
If q=0.4, what is the frequency of AA? Answer: 0.36
Which one of the following statements correctly described features
shared by simple multicellular eukaryotes? Answer: Cells adhere to one
another, most of the cells are capable of a wide range of functions,
including reproduction; and the loss of one or more cells usually does
not lead to the death of the organism.
Unlike plant cells, animal cells move during development. Which of the
following terms describes the reorganization of undifferentiated cells
which results in the formation of an embryonic structure with multiple
layers? Answer: gastrulation
© 2025 All rights reserved
Biology 1108 Questions with Answers (100% Correct
Answers)
In general, in a sample of n individuals, the frequency of an allele is:
Answer: the number of occurrences of the allele divided by
twice the number of individuals in the sample (2n)
In a population of Mendel's garden peas, the frequency of dominant
yellow-flowered plants is 50%. The population is in Hardy-Weinberg
equilibrium. From this information alone, you can determine the allele
frequencies (A=p and a=q). T/F Answer: True.
If a population is not in Hardy-Weinberg equilibrium, we can conclude
that: Answer: evolution has occurred because one of the assumptions of
the Hardy-Weinberg equilibrium has been violated.
The goldenrod gall fly lays its eggs on the terminal buds of goldenrod
plants. Larvae chew through the buds and into the stems, where their
saliva induces the plant to generate a gall, or outgrowth of tissue that
then provides food and shelter for the developing larva. The larvae are
prey to both parasitoid wasps and to birds; wasps selectively prey on
larvae inside the smallest galls while birds selectively prey on larvae
© 2025 All rights reserved
,2
inside the largest galls. Golden gall flies are therefore subject to: Answer:
stabilizing selection
Which big sagebrush plant is the most fit, based on the information
presented? Answer: The individual that produces 3% more offspring each
year than others in its population.
On a hike through the forest, you notice a population of 100 flowering
plants that all look identical (phenotypic clones). They span an area of
approximately 100 square meters. You take some representatives from
one corner of their distribution back to the lab, sequence their DNA and
conclude that they are genetoc clones. T/F.
This population can evolve.
This population can only evolve through genetic drift.
This population can only evolve through natural selection. Answer: True.
False.
False.
You find that a wild population of antelope is not in HWE. From this
information alone, can you determine the mechanism of evolution
© 2025 All rights reserved
,3
operating on the population? Answer: No, HWE does not inform us as to
the mechanism of evolutionary change, it only informs us as to whether
or not evolution is happening.
The only evolutionary process that leads to adaptive change is: Answer:
natural selection
What does it mean to say that an allele is "fixed" in the population?
Answer: It is an indication of no genetic variation at that locus in the
population.
Two organisms are part of the same population if: Answer: they are the
same species and are in the same geographic area.
Why can't we measure genetic variation in a population using
phenotypes? Answer: The environment can also affect the phenotype.
A snowshoe hare produces a white coat during the winter, allowing it to
better hide from predators. White-coated hares have thrived and a
majority of snowshoe hares in the population now produce white coats.
Based on this, which of the following statements are definitely true?
Answer: The alleles for a white winter coat increased over time.
© 2025 All rights reserved
, 4
According to the BCS (Biological Species Concept), two individuals are
members of the same species if: Answer: they can produce fertile
offspring.
The intricate plumage of a male Bird of Paradise has become increasingly
elaborate throughout their evolution due to females mating
preferentially with males that display the most impressive feathers. This is
an example of: Answer: sexual selection
If q=0.4, what is the frequency of AA? Answer: 0.36
Which one of the following statements correctly described features
shared by simple multicellular eukaryotes? Answer: Cells adhere to one
another, most of the cells are capable of a wide range of functions,
including reproduction; and the loss of one or more cells usually does
not lead to the death of the organism.
Unlike plant cells, animal cells move during development. Which of the
following terms describes the reorganization of undifferentiated cells
which results in the formation of an embryonic structure with multiple
layers? Answer: gastrulation
© 2025 All rights reserved
