Biology 1108 2025/2026 Exam Questions
and Corresponding Answers with Surety
of 100% Pass Mark
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
1
COPYRIGHT@SARAHROSAPERAL 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE.
PRIVACY STATEMENT. ALL RIGHTS RESERVED
,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 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.
2
COPYRIGHT@SARAHROSAPERAL 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE.
PRIVACY STATEMENT. ALL RIGHTS RESERVED
,False.
You find that a wild population of antelope is not in HWE. From this
information alone, can you determine the mechanism of evolution 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
3
COPYRIGHT@SARAHROSAPERAL 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE.
PRIVACY STATEMENT. ALL RIGHTS RESERVED
, this, which of the following statements are definitely true? - 🧠 ANSWER
✔✔The alleles for a white winter coat increased over time.
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
4
COPYRIGHT@SARAHROSAPERAL 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE.
PRIVACY STATEMENT. ALL RIGHTS RESERVED
and Corresponding Answers with Surety
of 100% Pass Mark
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
1
COPYRIGHT@SARAHROSAPERAL 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE.
PRIVACY STATEMENT. ALL RIGHTS RESERVED
,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 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.
2
COPYRIGHT@SARAHROSAPERAL 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE.
PRIVACY STATEMENT. ALL RIGHTS RESERVED
,False.
You find that a wild population of antelope is not in HWE. From this
information alone, can you determine the mechanism of evolution 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
3
COPYRIGHT@SARAHROSAPERAL 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE.
PRIVACY STATEMENT. ALL RIGHTS RESERVED
, this, which of the following statements are definitely true? - 🧠 ANSWER
✔✔The alleles for a white winter coat increased over time.
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
4
COPYRIGHT@SARAHROSAPERAL 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE.
PRIVACY STATEMENT. ALL RIGHTS RESERVED
