9/28/25, 3:14 PM
WGU Biochemistry EXAM 2025-2026 \COMPLETE
QUESTIONS AND ACCURATE DETAILED ANSWERS
\VERIFIED 100% ALREADY GRADEDC A+ \LATEST
UPDATE 2025-2026
Terms in this set (100)
The physical trait of lip The correct answer is
protrusion exhibits a incomplete dominance. The
characteristic type of blending of the large and small
inheritance, as shown by lip protrusion into an
the pedigree above. What intermediate, medium lip
type of protrusion, as well as the
inheritance best describes presence of all three variations in
this inheritance pattern? the offspring, demonstrate a
clear example of incomplete
a. Incomplete dominance dominance.
The normal sequence of a Silent mutations are those in which the amino acid
section of the HLA-B27 encoded doesn't change as a result of the mutation.
gene, a genetic marker
of the Missense mutations are those in which the amino acid
inflammatory disease encoded changes to a different amino acid as a
Ankylosing
spondylitis, is given below. result of the mutation.
Match each mutation of the
Nonsense mutations are those in which the amino acid
sequence to the type of
encoded changes to a stop codon as a result of the
mutation it exhibits. A genetic
mutation, yielding a smaller protein.
code table is provided for
your use in answering the
Insertions are the inclusion of extra nucleotides
question.
compared to the original sequence. They can result in
other mutations, such as nonsense mutations.
5'- CGG CAG AAU UUA -3'
/ 1/36
,9/28/25, 11:42 PM WGU Biochemistry
5'- CAG CAG AAU UUA -3' - Deletions are the removal of nucleotides compared to
Missense the original sequence. They can result in other
mutation
mutations, such as nonsense mutations.
5'- CGG CAG AAA UUU A-3' -
Insertion
5'- CGG CAG AAC UUA -3' -
Silent
mutation
5'- CGG CAG AAU UA -3' -
Deletion
5'- CGG UAG AAU UUA-3' -
Nonsense
mutation
PCR is a powerful tool that PCR's ability to amplify is powerful, and products can
can do all of the even be generated from
following.... samples with just a few cells. PCR is less reliable for
amplifying large segments of
b. detect mutations that lead DNA greater than 6 kb, though some careful changes to
to disease
the techniques can allow it.
c. copy small segments of
DNA, less than 6kb
d. amplify DNA from samples
that have just a few cells
/ 2/36
,9/28/25, 11:42 PM WGU Biochemistry
Which of the following is a The primers used in PCR are made from DNA, rather
required "ingredient" in a than RNA. RNA primers are used in DNA replication
PCR inside the cell, but the quick degradation of RNA makes
reaction? it
less useful for PCR reactions. Instead, PCR reactions
a. DNA nucleotides
contain primers made of DNA to anneal to the region of
b. DNA primers
DNA that will be amplified and serve as a starting point
c. DNA polymerase
for DNA polymerase.
Which of the following Differences in DNA sequence can be detected since
changes can be these changes can alter the ability of primers to
detected using PCR? anneal to the DNA. They can also be detected by
DNA
a. Differences in DNA sequence sequencing of the PCR product. Epigenetic changes are
b. Insertions not detectable via PCR because they don't affect the
c. Deletions
DNA sequence.
A small segment of This sequence is the same as the coding sequence, and
Kevin's green opsin gene the "T" bases have been replaced with "U", as is found
is shown below. What would in RNA.
be the resulting mRNA
sequence?
Kevin's opsin gene at
nucleotide positions 936 to
941.
5'-G.C.C.T.A.G-3' (coding
strand)
3'-C.G.G.A.T.C-5' (template
strand)
c. 5'-GCCUAG-3'
The gene for blue opsin The blue opsin gene is located on a somatic (non-sex)
protein is located on chromosome, and therefore will be inherited with the
chromosome 7, a non-sex same frequency for both sexes.
chromosome. What kind of
inheritance pattern would
/ 3/36
, 9/28/25, 11:42 PM WGU Biochemistry
you expect to see with color
blindness due to a mutated
blue opsin?
a. An equal distribution of
blue color blindness between
males and females.
In Kevin's case, a specific Missense mutations are point mutations that change a
kind of mutation in the opsin single base pair in a codon such that the codon now
gene resulted in the encodes a different amino acid. In Kevin's case, a
premature termination of the nonsense mutation, which is a point mutation that
translation process. This changes a single base pair in a codon to a stop codon
resulted in a shorter opsin resulted in termination of the translation signal. This
protein than usual. What further led to the synthesis of truncated protein.
specific mutation could
have
caused this?
c. Nonsense mutations
/ 4/36
WGU Biochemistry EXAM 2025-2026 \COMPLETE
QUESTIONS AND ACCURATE DETAILED ANSWERS
\VERIFIED 100% ALREADY GRADEDC A+ \LATEST
UPDATE 2025-2026
Terms in this set (100)
The physical trait of lip The correct answer is
protrusion exhibits a incomplete dominance. The
characteristic type of blending of the large and small
inheritance, as shown by lip protrusion into an
the pedigree above. What intermediate, medium lip
type of protrusion, as well as the
inheritance best describes presence of all three variations in
this inheritance pattern? the offspring, demonstrate a
clear example of incomplete
a. Incomplete dominance dominance.
The normal sequence of a Silent mutations are those in which the amino acid
section of the HLA-B27 encoded doesn't change as a result of the mutation.
gene, a genetic marker
of the Missense mutations are those in which the amino acid
inflammatory disease encoded changes to a different amino acid as a
Ankylosing
spondylitis, is given below. result of the mutation.
Match each mutation of the
Nonsense mutations are those in which the amino acid
sequence to the type of
encoded changes to a stop codon as a result of the
mutation it exhibits. A genetic
mutation, yielding a smaller protein.
code table is provided for
your use in answering the
Insertions are the inclusion of extra nucleotides
question.
compared to the original sequence. They can result in
other mutations, such as nonsense mutations.
5'- CGG CAG AAU UUA -3'
/ 1/36
,9/28/25, 11:42 PM WGU Biochemistry
5'- CAG CAG AAU UUA -3' - Deletions are the removal of nucleotides compared to
Missense the original sequence. They can result in other
mutation
mutations, such as nonsense mutations.
5'- CGG CAG AAA UUU A-3' -
Insertion
5'- CGG CAG AAC UUA -3' -
Silent
mutation
5'- CGG CAG AAU UA -3' -
Deletion
5'- CGG UAG AAU UUA-3' -
Nonsense
mutation
PCR is a powerful tool that PCR's ability to amplify is powerful, and products can
can do all of the even be generated from
following.... samples with just a few cells. PCR is less reliable for
amplifying large segments of
b. detect mutations that lead DNA greater than 6 kb, though some careful changes to
to disease
the techniques can allow it.
c. copy small segments of
DNA, less than 6kb
d. amplify DNA from samples
that have just a few cells
/ 2/36
,9/28/25, 11:42 PM WGU Biochemistry
Which of the following is a The primers used in PCR are made from DNA, rather
required "ingredient" in a than RNA. RNA primers are used in DNA replication
PCR inside the cell, but the quick degradation of RNA makes
reaction? it
less useful for PCR reactions. Instead, PCR reactions
a. DNA nucleotides
contain primers made of DNA to anneal to the region of
b. DNA primers
DNA that will be amplified and serve as a starting point
c. DNA polymerase
for DNA polymerase.
Which of the following Differences in DNA sequence can be detected since
changes can be these changes can alter the ability of primers to
detected using PCR? anneal to the DNA. They can also be detected by
DNA
a. Differences in DNA sequence sequencing of the PCR product. Epigenetic changes are
b. Insertions not detectable via PCR because they don't affect the
c. Deletions
DNA sequence.
A small segment of This sequence is the same as the coding sequence, and
Kevin's green opsin gene the "T" bases have been replaced with "U", as is found
is shown below. What would in RNA.
be the resulting mRNA
sequence?
Kevin's opsin gene at
nucleotide positions 936 to
941.
5'-G.C.C.T.A.G-3' (coding
strand)
3'-C.G.G.A.T.C-5' (template
strand)
c. 5'-GCCUAG-3'
The gene for blue opsin The blue opsin gene is located on a somatic (non-sex)
protein is located on chromosome, and therefore will be inherited with the
chromosome 7, a non-sex same frequency for both sexes.
chromosome. What kind of
inheritance pattern would
/ 3/36
, 9/28/25, 11:42 PM WGU Biochemistry
you expect to see with color
blindness due to a mutated
blue opsin?
a. An equal distribution of
blue color blindness between
males and females.
In Kevin's case, a specific Missense mutations are point mutations that change a
kind of mutation in the opsin single base pair in a codon such that the codon now
gene resulted in the encodes a different amino acid. In Kevin's case, a
premature termination of the nonsense mutation, which is a point mutation that
translation process. This changes a single base pair in a codon to a stop codon
resulted in a shorter opsin resulted in termination of the translation signal. This
protein than usual. What further led to the synthesis of truncated protein.
specific mutation could
have
caused this?
c. Nonsense mutations
/ 4/36
