Bio 340 Exam 1 Study Guide
Questions and All Correct Answers
2025-2026 Updated.
Mitosis and Meiosis II - Answer In which nuclear division process do sister chromatids
segregate?
chiasmata - Answer At metaphase I, homologous chromosomes are connected only at what
structure?
Pairing of homologous chromosomes - Answer Which of the following is unique to prophase I
of meiosis?
16 - Answer If a muscle cell of a typical organism has 32 chromosomes, how many
chromosomes will be in a gamete of that same organism?
four haploid - Answer Meiosis produces ___________ daughter cells
All offspring with red eyes - Answer In a cross between a homozygous red-eyed female fruit fly
and a white-eyed male fruit fly, what is the expected outcome?
All male offspring with white eyes - Answer In a cross between a white-eyed female fruit fly
and a red-eyed male fruit fly, what is the expected outcome?
50% - Answer Hemophilia is an x-linked recessive pattern. A carrier woman (one affected X
chromosome) married a man with hemophilia and they have children. What percent of their
boy children will be affected?
Both of her X chromosomes would have to have the recessive gene for hemophilia - Answer
What would a female genotype have to be for her to have the genetic disease hemophilia?
p=0.5. All daughters will be affected. - Answer Congenital generalized hypertrichosis is a an X-
linked dominant disease. If an affected male marries an unaffected female, what is the
probability of passing the hypertrichosis gene to his offspring?
, multiple alleles and codominance - Answer ABO blood groups are an example of
Yes, if each parent carries one i allele - Answer Could an individual with blood type O
(genotype ii) be a ligitimate child of parents in which one parent has type A and the other has
type B blood?
Incomplete dominance - Answer A white splashed (Bl/Bl) Andalausian chicken and a black
(bl/bl) Andalusian chicken are crossed. The heterozygotes produced show an intermediate
phenotype (blue). What inheritance pattern would this be indicative of?
Codominance - Answer A person with only one Sickle Cell Anemia allele and one unaffected
allele will have some normal red blood cells and some abnormal. What inheritance pattern
would this be indicative of?
DNA - Answer In Griffith's experiments, what made the harmless R cells grow capsules when
exposed to heat-killed S cells?
Be incorporated into the phage protein coat because some amino acids contain sulfur - Answer
In the Hershey-Chase experiment radioactive Sulfur was used to:
Radioactive phosphorus was found inside the cell - Answer The experiments by Hershey and
Chase helped confirm that DNA was the hereditary material on the basis of the finding that:
23 percent - Answer If DNA of a particular species was analyzed and it was found that it
contains 27 percent of adenine (A), what would be the percentage of cytosine (C)?
Sample 1 - Answer Four nucleic acid samples are analyzed to determine the percentages of
the nucleotides they contain. Which of the following DNA sample(s) could be double-stranded
DNA? Sample 1: A(22%), G(28%), T(22%), U(0%), C(28%); Sample 2: A(30%), G(30%), T(0%),
U(20%), C(20%); Sample 3: A(18%), G(32%), T(0%), U(18%), C(32%); Sample 4: A(29%), G(29%),
T(21%), U(0%), C(21%)
inside the nucleus, DNA - Answer Your chromosomes are located _______ and they are made
of ___________
sugar + phosphate + nitrogen base - Answer A nucleotide is made of _______.
Questions and All Correct Answers
2025-2026 Updated.
Mitosis and Meiosis II - Answer In which nuclear division process do sister chromatids
segregate?
chiasmata - Answer At metaphase I, homologous chromosomes are connected only at what
structure?
Pairing of homologous chromosomes - Answer Which of the following is unique to prophase I
of meiosis?
16 - Answer If a muscle cell of a typical organism has 32 chromosomes, how many
chromosomes will be in a gamete of that same organism?
four haploid - Answer Meiosis produces ___________ daughter cells
All offspring with red eyes - Answer In a cross between a homozygous red-eyed female fruit fly
and a white-eyed male fruit fly, what is the expected outcome?
All male offspring with white eyes - Answer In a cross between a white-eyed female fruit fly
and a red-eyed male fruit fly, what is the expected outcome?
50% - Answer Hemophilia is an x-linked recessive pattern. A carrier woman (one affected X
chromosome) married a man with hemophilia and they have children. What percent of their
boy children will be affected?
Both of her X chromosomes would have to have the recessive gene for hemophilia - Answer
What would a female genotype have to be for her to have the genetic disease hemophilia?
p=0.5. All daughters will be affected. - Answer Congenital generalized hypertrichosis is a an X-
linked dominant disease. If an affected male marries an unaffected female, what is the
probability of passing the hypertrichosis gene to his offspring?
, multiple alleles and codominance - Answer ABO blood groups are an example of
Yes, if each parent carries one i allele - Answer Could an individual with blood type O
(genotype ii) be a ligitimate child of parents in which one parent has type A and the other has
type B blood?
Incomplete dominance - Answer A white splashed (Bl/Bl) Andalausian chicken and a black
(bl/bl) Andalusian chicken are crossed. The heterozygotes produced show an intermediate
phenotype (blue). What inheritance pattern would this be indicative of?
Codominance - Answer A person with only one Sickle Cell Anemia allele and one unaffected
allele will have some normal red blood cells and some abnormal. What inheritance pattern
would this be indicative of?
DNA - Answer In Griffith's experiments, what made the harmless R cells grow capsules when
exposed to heat-killed S cells?
Be incorporated into the phage protein coat because some amino acids contain sulfur - Answer
In the Hershey-Chase experiment radioactive Sulfur was used to:
Radioactive phosphorus was found inside the cell - Answer The experiments by Hershey and
Chase helped confirm that DNA was the hereditary material on the basis of the finding that:
23 percent - Answer If DNA of a particular species was analyzed and it was found that it
contains 27 percent of adenine (A), what would be the percentage of cytosine (C)?
Sample 1 - Answer Four nucleic acid samples are analyzed to determine the percentages of
the nucleotides they contain. Which of the following DNA sample(s) could be double-stranded
DNA? Sample 1: A(22%), G(28%), T(22%), U(0%), C(28%); Sample 2: A(30%), G(30%), T(0%),
U(20%), C(20%); Sample 3: A(18%), G(32%), T(0%), U(18%), C(32%); Sample 4: A(29%), G(29%),
T(21%), U(0%), C(21%)
inside the nucleus, DNA - Answer Your chromosomes are located _______ and they are made
of ___________
sugar + phosphate + nitrogen base - Answer A nucleotide is made of _______.
