BIO 345 Final Exam Questions With Complete Solutions
1 A disorder that causes nearsightedness is caused by a genetic
mutation. Nearsightedness was harmful to people living on a
small island because they relied on sight to interpret their
surroundings. In the 1600s, a huge storm killed many of the
people on the island. Before the storm, 0.1% of the people had
this disorder. Of the 50 people who survived the storm, 2% were
nearsighted. Within a few generations, 10% of the islanders
were nearsighted. If we infer that the frequency of nearsighted
individuals could be evidence for genetic drift, which of the
following statements are true?
(1) Nearsightedness must have become more common through
natural selection.
(2) Nearsightedness must have become more common through
new mutations
a. Both (1) and (2)
b. Neither (1) nor (2)
c. Only (1)
d. Only (2) Correct Answers B
A disorder that causes nearsightedness is caused by a genetic
mutation. Nearsightedness was harmful to people living on a
small island because they relied on sight to interpret their
surroundings. In the 1600s, a huge storm killed many of the
people on the island. Before the storm, 0.1% of the people had
this disorder. Of the 50 people who survived the storm, 2% were
nearsighted. Within a few generations, 10% of the islanders
were nearsighted.
,If we infer that the frequency of nearsighted individuals could be
evidence for genetic drift, which of the following statements are
true?
(1) Nearsightedness must have become more common through
natural selection.
(2) Nearsightedness must have become more common through
new mutations
a. Both (1) and (2)
b. Neither (1) nor (2)
c. Only (1)
d. Only (2) Correct Answers B
A mutation that changes one amino acid into a different amino
acid is a:
A. Nonsynonymous mutation
B. Nonsense mutation
C. Synonymous mutation Correct Answers A
A ring species is an example of:
A. Allopatric speciation
B. Parapatric speciation
C. Both allopatric and parapatric
D. Neither allopatric or parapatric Correct Answers C
A translocation occurs when:
a. A segment of a chromosome is inverted.
b. A segment of a chromosome is moved from one chromosome
to anon- homologous chromosome.
c. A segment of a chromosome is removed from the genome.
d. A segment of a chromosome is copied. Correct Answers B
,About how many base pairs are in the typical human genome?
A) 3 Million
B) 6 million
C) 3 billion
D) 6 billion Correct Answers C
About how many base pairs in the Amoeba proteus genome?
A. 3 thousand
B. 300 thousand
C. 3 billion
D. 300 billion Correct Answers D
About how many total base pairs are there in a typical human
genome?
a. 3 million
b. 6 million
c. 3 billion
d. 6 billion Correct Answers C
All traits are adaptations due to natural selection
A. True
B. False Correct Answers B
Asexual reproduction will evolve when:
A. The environment is predictable
B. There are not many niches
C. There is low parasite load
D. All of the above
E. None of the above Correct Answers D
, Assuming equal population sizes, a sexually reproducing
population is expected to experience <fill in the blank> than an
asexually reproducing population:
A. Less hitchhiking
B. Less background selection
C. Both A) and B)
D. Neither A) nor B) Correct Answers C
Assuming equal population sizes, an asexually reproducing
population is expected to experience <fill in the blank> than a
sexually reproducing population:
a. More hitchhiking and more background selection
b. More hitchhiking and less background selection
c. Less hitchhiking and more background selection
d. Less hitchhiking and less background selection Correct
Answers A
Can individuals in asexual populations have a genetic mom and
a genetic dad?
A.Yes
B.No Correct Answers B
Charles Lyell proposed Uniformitarianism, which states:
a. That major geological structures appear only due to
catastrophes
b. That slow erosion is caused by catastrophic events
c. That slow erosion over time parallels the slow evolution of
species
d. That major geological structures can appear gradually via
slow erosion Correct Answers D
1 A disorder that causes nearsightedness is caused by a genetic
mutation. Nearsightedness was harmful to people living on a
small island because they relied on sight to interpret their
surroundings. In the 1600s, a huge storm killed many of the
people on the island. Before the storm, 0.1% of the people had
this disorder. Of the 50 people who survived the storm, 2% were
nearsighted. Within a few generations, 10% of the islanders
were nearsighted. If we infer that the frequency of nearsighted
individuals could be evidence for genetic drift, which of the
following statements are true?
(1) Nearsightedness must have become more common through
natural selection.
(2) Nearsightedness must have become more common through
new mutations
a. Both (1) and (2)
b. Neither (1) nor (2)
c. Only (1)
d. Only (2) Correct Answers B
A disorder that causes nearsightedness is caused by a genetic
mutation. Nearsightedness was harmful to people living on a
small island because they relied on sight to interpret their
surroundings. In the 1600s, a huge storm killed many of the
people on the island. Before the storm, 0.1% of the people had
this disorder. Of the 50 people who survived the storm, 2% were
nearsighted. Within a few generations, 10% of the islanders
were nearsighted.
,If we infer that the frequency of nearsighted individuals could be
evidence for genetic drift, which of the following statements are
true?
(1) Nearsightedness must have become more common through
natural selection.
(2) Nearsightedness must have become more common through
new mutations
a. Both (1) and (2)
b. Neither (1) nor (2)
c. Only (1)
d. Only (2) Correct Answers B
A mutation that changes one amino acid into a different amino
acid is a:
A. Nonsynonymous mutation
B. Nonsense mutation
C. Synonymous mutation Correct Answers A
A ring species is an example of:
A. Allopatric speciation
B. Parapatric speciation
C. Both allopatric and parapatric
D. Neither allopatric or parapatric Correct Answers C
A translocation occurs when:
a. A segment of a chromosome is inverted.
b. A segment of a chromosome is moved from one chromosome
to anon- homologous chromosome.
c. A segment of a chromosome is removed from the genome.
d. A segment of a chromosome is copied. Correct Answers B
,About how many base pairs are in the typical human genome?
A) 3 Million
B) 6 million
C) 3 billion
D) 6 billion Correct Answers C
About how many base pairs in the Amoeba proteus genome?
A. 3 thousand
B. 300 thousand
C. 3 billion
D. 300 billion Correct Answers D
About how many total base pairs are there in a typical human
genome?
a. 3 million
b. 6 million
c. 3 billion
d. 6 billion Correct Answers C
All traits are adaptations due to natural selection
A. True
B. False Correct Answers B
Asexual reproduction will evolve when:
A. The environment is predictable
B. There are not many niches
C. There is low parasite load
D. All of the above
E. None of the above Correct Answers D
, Assuming equal population sizes, a sexually reproducing
population is expected to experience <fill in the blank> than an
asexually reproducing population:
A. Less hitchhiking
B. Less background selection
C. Both A) and B)
D. Neither A) nor B) Correct Answers C
Assuming equal population sizes, an asexually reproducing
population is expected to experience <fill in the blank> than a
sexually reproducing population:
a. More hitchhiking and more background selection
b. More hitchhiking and less background selection
c. Less hitchhiking and more background selection
d. Less hitchhiking and less background selection Correct
Answers A
Can individuals in asexual populations have a genetic mom and
a genetic dad?
A.Yes
B.No Correct Answers B
Charles Lyell proposed Uniformitarianism, which states:
a. That major geological structures appear only due to
catastrophes
b. That slow erosion is caused by catastrophic events
c. That slow erosion over time parallels the slow evolution of
species
d. That major geological structures can appear gradually via
slow erosion Correct Answers D
