Genetics and Molecular Biology FINAL
EXAM (BIOL 2301) Exam Questions +
Verified Answers 100% correct, Update
2026
when the base composition of double-stranded DNA from a
new species of bacteria was determined, 20% of the bases
were found to be adenine. What is the percentage of cytosine
in the DNA of this organism? - Correct Answers ✅30%
the sequence of one strand of DNA is 5'-GCTTTAG-3'. What is
the sequence of the complementary strand? - Correct
Answers ✅5'-CTAAAGC-3'
what is the process of making an RNA strand from a DNA
template called? - Correct Answers ✅transcription
what is tRNA? - Correct Answers ✅a molecule that
incorporates a specific amino acid into the growing protein
when it recognizes a specific codon
in a complementation test, two strains of fruit flies with
mutations that cause the flies not to produce any wings are
crossed. If the F1 offspring have normal wings, what can be
concluded? - Correct Answers ✅the mutations are not in
the same gene
you used x-rays to generate mutations in Neurospora Crassa.
After analyzing the mutants a-f, you realized that they appear
to be working in the same pathway. To estimate if some of the
,Genetics and Molecular Biology FINAL
EXAM (BIOL 2301) Exam Questions +
Verified Answers 100% correct, Update
2026
mutations are within the same gene, you crossed all the
mutants with each other leading to the complementation
matrix shown below. Which of the following conclusions can
be drawn from the matrix? - Correct Answers ✅mutations
a and d are likely within the same gene
where in a non-dividing cell can chromosomes be found? -
Correct Answers ✅nucleus
the pedigree below tracks the presence of dimples within a
family. Assume that gene "d" is responsible for the family trait
and that having dimples is the dominant allele "D" of the
autosomal trait ("d" is the recessive trait for not having
dimples). Which of the following genotype - person
combinations is possible? - Correct Answers ✅III-2: Dd
the ability to roll the tongue is a dominant trait. In the
pedigree below, solid symbols represent "rollers" and open
symbols "non-rollers". For analysis purposes, you can use "R"
representing the dominant allele for roller and "r" the allele
for the recessive trait. Which person-roller combination within
this pedigree can't be explained by the classical passing on of
alleles from the parents to the children? - Correct Answers
✅C9
, Genetics and Molecular Biology FINAL
EXAM (BIOL 2301) Exam Questions +
Verified Answers 100% correct, Update
2026
In families where both parents are heterozygous for a
recessive trait, what is the probability of their having a child
with the homozygous recessive genotype? - Correct
Answers ✅1/4
you are using Mendel's pees and start with a cross between
AA and aa. If you let the progreny of the cross self-fertilize,
what will be the proportion of heterozygotes in the F2
progeny? - Correct Answers ✅1/2
Parents heterozygous for a recessive allele are called: -
Correct Answers ✅carriers
a woman with keratosis, a skin condition caused by a rare
dominant allele (assume she is heterozygous), marries a
normal man, and they have two children. What is the
probability that both children are normal? - Correct Answers
✅1/4
the longitudinal halves of a chromosome that has undergone
replication are called: - Correct Answers ✅chromatids
the process of cell division that ensures that each of the two
daughter cells receives a chromosome complement identical
EXAM (BIOL 2301) Exam Questions +
Verified Answers 100% correct, Update
2026
when the base composition of double-stranded DNA from a
new species of bacteria was determined, 20% of the bases
were found to be adenine. What is the percentage of cytosine
in the DNA of this organism? - Correct Answers ✅30%
the sequence of one strand of DNA is 5'-GCTTTAG-3'. What is
the sequence of the complementary strand? - Correct
Answers ✅5'-CTAAAGC-3'
what is the process of making an RNA strand from a DNA
template called? - Correct Answers ✅transcription
what is tRNA? - Correct Answers ✅a molecule that
incorporates a specific amino acid into the growing protein
when it recognizes a specific codon
in a complementation test, two strains of fruit flies with
mutations that cause the flies not to produce any wings are
crossed. If the F1 offspring have normal wings, what can be
concluded? - Correct Answers ✅the mutations are not in
the same gene
you used x-rays to generate mutations in Neurospora Crassa.
After analyzing the mutants a-f, you realized that they appear
to be working in the same pathway. To estimate if some of the
,Genetics and Molecular Biology FINAL
EXAM (BIOL 2301) Exam Questions +
Verified Answers 100% correct, Update
2026
mutations are within the same gene, you crossed all the
mutants with each other leading to the complementation
matrix shown below. Which of the following conclusions can
be drawn from the matrix? - Correct Answers ✅mutations
a and d are likely within the same gene
where in a non-dividing cell can chromosomes be found? -
Correct Answers ✅nucleus
the pedigree below tracks the presence of dimples within a
family. Assume that gene "d" is responsible for the family trait
and that having dimples is the dominant allele "D" of the
autosomal trait ("d" is the recessive trait for not having
dimples). Which of the following genotype - person
combinations is possible? - Correct Answers ✅III-2: Dd
the ability to roll the tongue is a dominant trait. In the
pedigree below, solid symbols represent "rollers" and open
symbols "non-rollers". For analysis purposes, you can use "R"
representing the dominant allele for roller and "r" the allele
for the recessive trait. Which person-roller combination within
this pedigree can't be explained by the classical passing on of
alleles from the parents to the children? - Correct Answers
✅C9
, Genetics and Molecular Biology FINAL
EXAM (BIOL 2301) Exam Questions +
Verified Answers 100% correct, Update
2026
In families where both parents are heterozygous for a
recessive trait, what is the probability of their having a child
with the homozygous recessive genotype? - Correct
Answers ✅1/4
you are using Mendel's pees and start with a cross between
AA and aa. If you let the progreny of the cross self-fertilize,
what will be the proportion of heterozygotes in the F2
progeny? - Correct Answers ✅1/2
Parents heterozygous for a recessive allele are called: -
Correct Answers ✅carriers
a woman with keratosis, a skin condition caused by a rare
dominant allele (assume she is heterozygous), marries a
normal man, and they have two children. What is the
probability that both children are normal? - Correct Answers
✅1/4
the longitudinal halves of a chromosome that has undergone
replication are called: - Correct Answers ✅chromatids
the process of cell division that ensures that each of the two
daughter cells receives a chromosome complement identical
