WGU C190 INTRO TO BIOLOGY PA EXAM / LATEST WGU C190
INTRO TO BIOLOGY PRE ASSESSMENT ACTUAL EXAM 2026/2027
COMPLETE ACCURATE EXAM APPROVED QUESTIONS AND
CORRECT VERIFIED ANSWERS (DETAILED ANSWERS) NEWEST
UPDATED VERSION |GUARANTEED PASS A+ (BRAND NEW!) |FULL
REVISED WGU C190 INTRO TO BIOLOGY
Biologists estimate that there are 1000 species of bacteria living in the
average human stomach. Biologists are studying how these species
interact with each other. Which level of ecological organization is being
studied?
Answer- Community
A recessive mutation in the dfn3 gene causes deafness. A mother with
dfn3 deafness will have sons who all have deafness. How did the sons
inherit the gene for deafness?
Answer- On the x chromosome from the mother.
A cutting is taken from a mature hydrangea plant with blue flowers. The
cutting is planted in acidic soil and produces red flowers. What caused
the flower color in this hydrangea cutting to change?
Answer- An interaction between the genes and the soil
Place the steps of dana replication in the order of occurrence.
,Answer- 1. Dan molecule unwinds
2. Dan molecule separates into two template strands.
3. Complementary nucleotides are added to each template strand.
4. Two dana molecules, each with a template strand and a new strand are
formed.
Which of the following carries the information that determines which
amino acids are used to make a protein?
Answer- Messenger dana
In which eukaryotic organelle does protein synthesis occur?
Answer- Endoplasmic reticulum
Which action would have a direct negative effect on the environment?
Answer- Removing native species
Aquatic habitats throughout the northeastern u’s have been damaged by
acidic rainfall. Airborne pollutants released by coal fired power plants
acidify the rain that falls in these regions, which has led to wide scale
disruptions to ecosystems and a decrease in the diversity in these
, habitats. Which activity would continue to increase the acidity of the
rain and negatively impact biodiversity in these aquatic habitats?
Answer- Increasing the use of fossil fuel dependent electrical power.
A fly is heterozygous for wing length, carrying one allele for the
dominant long winged appearance and one allele for the recessive short
winged appearance. Which percentage of the fly's gametes will carry the
short winged allele?
Answer- 50%
Black (b) is the dominant color, and red (b) is the recessive color in a
species of beetle. Two beetles that are both bb are crossed. What
percentage of the offspring will be red?
Answer- 25%
A species of fish can either have dominant red fins (r) or recessive white
fins (r). Fin lengths can either be dominant long (l) or recessive short (l).
A dihybrid cross is performed on two of these fish. Each fish is
heterozygous for the traits of fin color and fin length. Which four gamete
genotypes can be produced by a parent fish?
Answer- RI, rim, roll, roll
INTRO TO BIOLOGY PRE ASSESSMENT ACTUAL EXAM 2026/2027
COMPLETE ACCURATE EXAM APPROVED QUESTIONS AND
CORRECT VERIFIED ANSWERS (DETAILED ANSWERS) NEWEST
UPDATED VERSION |GUARANTEED PASS A+ (BRAND NEW!) |FULL
REVISED WGU C190 INTRO TO BIOLOGY
Biologists estimate that there are 1000 species of bacteria living in the
average human stomach. Biologists are studying how these species
interact with each other. Which level of ecological organization is being
studied?
Answer- Community
A recessive mutation in the dfn3 gene causes deafness. A mother with
dfn3 deafness will have sons who all have deafness. How did the sons
inherit the gene for deafness?
Answer- On the x chromosome from the mother.
A cutting is taken from a mature hydrangea plant with blue flowers. The
cutting is planted in acidic soil and produces red flowers. What caused
the flower color in this hydrangea cutting to change?
Answer- An interaction between the genes and the soil
Place the steps of dana replication in the order of occurrence.
,Answer- 1. Dan molecule unwinds
2. Dan molecule separates into two template strands.
3. Complementary nucleotides are added to each template strand.
4. Two dana molecules, each with a template strand and a new strand are
formed.
Which of the following carries the information that determines which
amino acids are used to make a protein?
Answer- Messenger dana
In which eukaryotic organelle does protein synthesis occur?
Answer- Endoplasmic reticulum
Which action would have a direct negative effect on the environment?
Answer- Removing native species
Aquatic habitats throughout the northeastern u’s have been damaged by
acidic rainfall. Airborne pollutants released by coal fired power plants
acidify the rain that falls in these regions, which has led to wide scale
disruptions to ecosystems and a decrease in the diversity in these
, habitats. Which activity would continue to increase the acidity of the
rain and negatively impact biodiversity in these aquatic habitats?
Answer- Increasing the use of fossil fuel dependent electrical power.
A fly is heterozygous for wing length, carrying one allele for the
dominant long winged appearance and one allele for the recessive short
winged appearance. Which percentage of the fly's gametes will carry the
short winged allele?
Answer- 50%
Black (b) is the dominant color, and red (b) is the recessive color in a
species of beetle. Two beetles that are both bb are crossed. What
percentage of the offspring will be red?
Answer- 25%
A species of fish can either have dominant red fins (r) or recessive white
fins (r). Fin lengths can either be dominant long (l) or recessive short (l).
A dihybrid cross is performed on two of these fish. Each fish is
heterozygous for the traits of fin color and fin length. Which four gamete
genotypes can be produced by a parent fish?
Answer- RI, rim, roll, roll
