WGU C190 Pre-Assessment Latest Update 2026 | Exam
Prep | High-Yield Review Guide
1. For a dihybrid cross, what is the ratio of offspring that display both recessive
traits?
1/8
3/8
1/16
9/16
2. Which of the following would consist of white muscle fibers?
Slow oxidative
Fast oxidative
Fast glycolytic
3. If a eukaryotic cell membrane were to lose its lipid component, what impact
would this have on the cell's functionality?
The cell would lose its structural integrity and ability to regulate
substance movement.
The cell would gain the ability to store more energy.
The cell would become impermeable to all substances.
The cell would function normally without any changes.
4. Describe how sexual selection influences the evolution of traits in male
peacocks.
Sexual selection leads to the evolution of traits like colorful tail
feathers in male peacocks, as these traits enhance their
, attractiveness to females and increase mating success.
Sexual selection causes males to compete for food resources rather
than mates.
Sexual selection is a process that only affects female traits in a
species.
Sexual selection results in random changes in the population's genetic
makeup.
5. Describe the significance of sister chromatids separating during cell division
processes such as meiosis and mitosis.
Sister chromatids separate to ensure that each daughter cell
receives an identical set of chromosomes.
Sister chromatids separate to facilitate the formation of gametes.
Sister chromatids separate to allow for genetic variation in offspring.
Sister chromatids separate to double the number of chromosomes in
daughter cells.
6. If a new predator is introduced to the ecosystem that is faster than the
largemouth bass, what adaptation might small fish need to develop to
survive?
larger body size
enhanced agility or increased speed
longer fins
brighter coloration
7. Which of the following is a negatively charged subatomic particle?
proton
, electron
neutron
nucleus
8. Which chromosome carries the DFN3 gene associated with deafness in this
inheritance scenario?
X chromosome
Y chromosome
Autosome
Mitochondrial DNA
9. Describe how soil pH can affect the expression of flower color in
hydrangeas.
Genetic factors are irrelevant to flower color changes.
Soil pH interacts with the genetic factors to influence flower color in
hydrangeas.
Flower color is determined solely by the size of the cutting.
Soil pH has no effect on flower color.
10. Describe how a recessive mutation on the X chromosome can affect male
offspring in terms of inheritance.
Males inherit only Y chromosomes from their mother, making them
immune to X-linked traits.
Males inherit two X chromosomes, one from each parent, allowing for
dominant traits to mask recessive ones.
Males inherit X chromosomes from both parents, which can lead to a
dominant trait expression.
, Males inherit one X chromosome from their mother, so a recessive
mutation on that X can express the trait.
11. The first step of glycolysis has a change in free energy that is greater than
zero (ΔG > 0) in the forward direction. Which of the following statements
describes how this reaction occurs under biological conditions?
None of the responses are correct
The energy of glucose phosphorylation drives ATP synthesis
The energy of ATP hydrolysis drives the synthesis of glucose-6-
phosphate
This reaction is spontaneous
Heat produced from ATP hydrolysis drives glucose-6-phosphate
synthesis
12. Describe the significance of amniotic eggs in the evolutionary adaptation of
certain organisms.
Amniotic eggs allow for reproduction in terrestrial environments by
providing a protective environment for the developing embryo.
Amniotic eggs are primarily found in aquatic organisms.
Amniotic eggs do not provide any advantages for embryo
development.
Amniotic eggs are a characteristic of all vertebrates.
13. A parent heterozygous for two traits will produce ____ types of gametes with
respect to those traits.
2
3
Prep | High-Yield Review Guide
1. For a dihybrid cross, what is the ratio of offspring that display both recessive
traits?
1/8
3/8
1/16
9/16
2. Which of the following would consist of white muscle fibers?
Slow oxidative
Fast oxidative
Fast glycolytic
3. If a eukaryotic cell membrane were to lose its lipid component, what impact
would this have on the cell's functionality?
The cell would lose its structural integrity and ability to regulate
substance movement.
The cell would gain the ability to store more energy.
The cell would become impermeable to all substances.
The cell would function normally without any changes.
4. Describe how sexual selection influences the evolution of traits in male
peacocks.
Sexual selection leads to the evolution of traits like colorful tail
feathers in male peacocks, as these traits enhance their
, attractiveness to females and increase mating success.
Sexual selection causes males to compete for food resources rather
than mates.
Sexual selection is a process that only affects female traits in a
species.
Sexual selection results in random changes in the population's genetic
makeup.
5. Describe the significance of sister chromatids separating during cell division
processes such as meiosis and mitosis.
Sister chromatids separate to ensure that each daughter cell
receives an identical set of chromosomes.
Sister chromatids separate to facilitate the formation of gametes.
Sister chromatids separate to allow for genetic variation in offspring.
Sister chromatids separate to double the number of chromosomes in
daughter cells.
6. If a new predator is introduced to the ecosystem that is faster than the
largemouth bass, what adaptation might small fish need to develop to
survive?
larger body size
enhanced agility or increased speed
longer fins
brighter coloration
7. Which of the following is a negatively charged subatomic particle?
proton
, electron
neutron
nucleus
8. Which chromosome carries the DFN3 gene associated with deafness in this
inheritance scenario?
X chromosome
Y chromosome
Autosome
Mitochondrial DNA
9. Describe how soil pH can affect the expression of flower color in
hydrangeas.
Genetic factors are irrelevant to flower color changes.
Soil pH interacts with the genetic factors to influence flower color in
hydrangeas.
Flower color is determined solely by the size of the cutting.
Soil pH has no effect on flower color.
10. Describe how a recessive mutation on the X chromosome can affect male
offspring in terms of inheritance.
Males inherit only Y chromosomes from their mother, making them
immune to X-linked traits.
Males inherit two X chromosomes, one from each parent, allowing for
dominant traits to mask recessive ones.
Males inherit X chromosomes from both parents, which can lead to a
dominant trait expression.
, Males inherit one X chromosome from their mother, so a recessive
mutation on that X can express the trait.
11. The first step of glycolysis has a change in free energy that is greater than
zero (ΔG > 0) in the forward direction. Which of the following statements
describes how this reaction occurs under biological conditions?
None of the responses are correct
The energy of glucose phosphorylation drives ATP synthesis
The energy of ATP hydrolysis drives the synthesis of glucose-6-
phosphate
This reaction is spontaneous
Heat produced from ATP hydrolysis drives glucose-6-phosphate
synthesis
12. Describe the significance of amniotic eggs in the evolutionary adaptation of
certain organisms.
Amniotic eggs allow for reproduction in terrestrial environments by
providing a protective environment for the developing embryo.
Amniotic eggs are primarily found in aquatic organisms.
Amniotic eggs do not provide any advantages for embryo
development.
Amniotic eggs are a characteristic of all vertebrates.
13. A parent heterozygous for two traits will produce ____ types of gametes with
respect to those traits.
2
3
