BSC 2011 Final Exam | University of South Florida |
UPDATED Questions with 100% Verified Answers
Q1: In which of the following examples would sepeciation most
likely occur?
A) Two populations of oak trees begin releasing pollen at
different times of the year, one in the spring and the other in
the fall
B) Unseasonably warm temperatures cause an unusual low
pressure zone over the Caribbean leading to a hurricane that
eradicates a population of parrots on the island of Saba
C) The Fukushima nuclear power plant fails and leaks
radioactive water into the ocean causing sterility among an
entire population of sea horses
D) Lake Huron warms by 2 degrees centigrade due to a hole
in the ozone layer
A: A
Q2: Your friend has been studying a population of fire ants found
on beaches of Tampa Bay. she thinks they might be a distinct
species from the fire ants found a bit inland in pine forests. to
test this hypothesis, she samples many individuals from the
beach at Fort DeSoto and many individuals fro the pine
Flatwoods area at lettuce lake park near USF. She brings the
ants to the lab to see if the queen from the Fort Desoto
population can be fertilized by the sperm from lettuce lake
population. which definition of species is she using to make
her determination?
A) Morphological Species concept
B) biological Species concept
C) Allopatric species concept
D) ecological species concept
A: B
Q3: Some beetles and flies have antler-like structures on their
heads, much like male deer. The existence of antlers in
beetles, flies, and deer species with strong male-male
competition is an example of
A) parsimony
B) similarity due to shared ancestry
C) convergent evolution
D) homology
A: C
,Q4: A population of lizards live in a forest; 100 are green, 100 are
brown, 100 are orange. a forest fire occurs and 85% of the
lizards die. the remaining lizardsa re all green and brown, after
25 generations the lizards are still green and brown; orange
lizards never reappeared in the population. Which of the
following best explains this phenomenon?
A) sexual selection
B) balancing selection
C) genetic drift
D) hetero zygote advantage
E) mutation
A: C
Q5: Which of the following is the most predictable outcome of
increased gene flow between two populations?
A) lower than average fitness in both populations
B) decreased genetic difference between the two populations
C) higher average fitness in both populations
D) increased genetic difference between two populations
A: B
Q6: Darwin and Wallace were the first to explain
A) how alleles work to form genotypes
B) how species evolve over time without individuals changing
during their lifetime
C) that species change over time
D) that species can go extinct
E) how individuals changing during their life leads to
speciation
A: B
Q7: And a population of flowering plants that is in Hardy Weinberg
equilibrium there are two possible alleles for color: R and W.
Flowers that are red and have a genotype of RR while white
flowers have WW genotypes and pink flowers have RW
genotypes in a population of 100 of this plant species 35 are
red, 20 or white, and 45 are pink. What is the allele frequency
of the W allele?
A) 0.42
B) 0.2
C) 0.45
D) 0.35
A: A
,Q8: Based on the phylogenetic tree below, you would conclude
that
A. A treat found only in sponges and mice probably first
appeared in ancestor D
B. A trait found in all five extant species is probably not found
an ancestor B
C. Mice are more closely related to sponges then to
mushrooms
D. Ferns and mice share a large number of shared derived
characteristics
E. Ferns are more closely related to sponges than they are to
mushrooms
A: C
Q9: An archeologist is working at a dig site in sedimentary rocks.
At 10m depth, she finds a large number of fossils that resemble
modern birds. At 15m depth, she finds an equal density of
lizard-like fossils. about these fossils?
A) The lizard and the bird most likely occupied the same
ecological niche
B) No conclusions can be made without dating the
accompanying rocks
C) The lizard fossil is most likely older than the bird fossil
D) The bird fossil is most likely older than the lizard fossil
E) The lizard and bird must have overlapped in time
A: C
Q10: And your biological diversity course, you are not animals
should be grouped as shown in tree 1 and the figure below.
This is based on morphological data: species a and B have
radial symmetry and species C, D, and E all have bilateral
symmetry. Further, species D and E have a shell, while no
other species shown here have one. Your lab partner
undertakes an undergraduate research project in which she
sequences part of the genome of the species, and find that
species see C and D have much more similar DNA sequences
than either of them share with species E. Based on that
, information she proposes that the phylogenetic tree should
be revised as it is in tree 2 below. Is this a reasonable
suggestion?
A) yes, as species that are more closely related have more
similar nucleotide sequences. The presence of a shell in
species D & E could be the result of convergent evolution, or
shells may have evolved in the common ancestors of species
C, D, and E then subsequently lost in species C.
B) no, because these similarities in DNA are most likely due to
convergent evolution
C) yes, as species that are more closely related have more
similar nucleotide sequences. The presence of a shell could
be the result of convergent evolution, but it is not likely that
shells were present in the common ancestor of C, D, and E
since traits are rarely lost.
D) no, because tree 1 and tree 2 show the same thing.
E) no, because once trees have been constructed based on
one set of data it makes little sense to redraw them again
A: A
Q11: Because hardly any oxygen was in the early earths
atmosphere, the earliest single celled heterotrophic micro
organisms probably used which of the following to produce
energy to drive metabolic processes?
A) photosynthesis
B) anaerobic cellular respiration
C) oxidative phosphorylation
D) aerobic cellular respiration
A: B
Q12: On a coral reef in the Florida Keys, a population of damselfish
has to color variation: brown and pink. These fish seek habitats
that provide good camouflage, so brown individuals mostly
associate with stands brown Elkhorn coral and pink individuals
are found exclusively in colonies of pink finger coral. Meeting
occurs within these coral patches, with females laying eggs
UPDATED Questions with 100% Verified Answers
Q1: In which of the following examples would sepeciation most
likely occur?
A) Two populations of oak trees begin releasing pollen at
different times of the year, one in the spring and the other in
the fall
B) Unseasonably warm temperatures cause an unusual low
pressure zone over the Caribbean leading to a hurricane that
eradicates a population of parrots on the island of Saba
C) The Fukushima nuclear power plant fails and leaks
radioactive water into the ocean causing sterility among an
entire population of sea horses
D) Lake Huron warms by 2 degrees centigrade due to a hole
in the ozone layer
A: A
Q2: Your friend has been studying a population of fire ants found
on beaches of Tampa Bay. she thinks they might be a distinct
species from the fire ants found a bit inland in pine forests. to
test this hypothesis, she samples many individuals from the
beach at Fort DeSoto and many individuals fro the pine
Flatwoods area at lettuce lake park near USF. She brings the
ants to the lab to see if the queen from the Fort Desoto
population can be fertilized by the sperm from lettuce lake
population. which definition of species is she using to make
her determination?
A) Morphological Species concept
B) biological Species concept
C) Allopatric species concept
D) ecological species concept
A: B
Q3: Some beetles and flies have antler-like structures on their
heads, much like male deer. The existence of antlers in
beetles, flies, and deer species with strong male-male
competition is an example of
A) parsimony
B) similarity due to shared ancestry
C) convergent evolution
D) homology
A: C
,Q4: A population of lizards live in a forest; 100 are green, 100 are
brown, 100 are orange. a forest fire occurs and 85% of the
lizards die. the remaining lizardsa re all green and brown, after
25 generations the lizards are still green and brown; orange
lizards never reappeared in the population. Which of the
following best explains this phenomenon?
A) sexual selection
B) balancing selection
C) genetic drift
D) hetero zygote advantage
E) mutation
A: C
Q5: Which of the following is the most predictable outcome of
increased gene flow between two populations?
A) lower than average fitness in both populations
B) decreased genetic difference between the two populations
C) higher average fitness in both populations
D) increased genetic difference between two populations
A: B
Q6: Darwin and Wallace were the first to explain
A) how alleles work to form genotypes
B) how species evolve over time without individuals changing
during their lifetime
C) that species change over time
D) that species can go extinct
E) how individuals changing during their life leads to
speciation
A: B
Q7: And a population of flowering plants that is in Hardy Weinberg
equilibrium there are two possible alleles for color: R and W.
Flowers that are red and have a genotype of RR while white
flowers have WW genotypes and pink flowers have RW
genotypes in a population of 100 of this plant species 35 are
red, 20 or white, and 45 are pink. What is the allele frequency
of the W allele?
A) 0.42
B) 0.2
C) 0.45
D) 0.35
A: A
,Q8: Based on the phylogenetic tree below, you would conclude
that
A. A treat found only in sponges and mice probably first
appeared in ancestor D
B. A trait found in all five extant species is probably not found
an ancestor B
C. Mice are more closely related to sponges then to
mushrooms
D. Ferns and mice share a large number of shared derived
characteristics
E. Ferns are more closely related to sponges than they are to
mushrooms
A: C
Q9: An archeologist is working at a dig site in sedimentary rocks.
At 10m depth, she finds a large number of fossils that resemble
modern birds. At 15m depth, she finds an equal density of
lizard-like fossils. about these fossils?
A) The lizard and the bird most likely occupied the same
ecological niche
B) No conclusions can be made without dating the
accompanying rocks
C) The lizard fossil is most likely older than the bird fossil
D) The bird fossil is most likely older than the lizard fossil
E) The lizard and bird must have overlapped in time
A: C
Q10: And your biological diversity course, you are not animals
should be grouped as shown in tree 1 and the figure below.
This is based on morphological data: species a and B have
radial symmetry and species C, D, and E all have bilateral
symmetry. Further, species D and E have a shell, while no
other species shown here have one. Your lab partner
undertakes an undergraduate research project in which she
sequences part of the genome of the species, and find that
species see C and D have much more similar DNA sequences
than either of them share with species E. Based on that
, information she proposes that the phylogenetic tree should
be revised as it is in tree 2 below. Is this a reasonable
suggestion?
A) yes, as species that are more closely related have more
similar nucleotide sequences. The presence of a shell in
species D & E could be the result of convergent evolution, or
shells may have evolved in the common ancestors of species
C, D, and E then subsequently lost in species C.
B) no, because these similarities in DNA are most likely due to
convergent evolution
C) yes, as species that are more closely related have more
similar nucleotide sequences. The presence of a shell could
be the result of convergent evolution, but it is not likely that
shells were present in the common ancestor of C, D, and E
since traits are rarely lost.
D) no, because tree 1 and tree 2 show the same thing.
E) no, because once trees have been constructed based on
one set of data it makes little sense to redraw them again
A: A
Q11: Because hardly any oxygen was in the early earths
atmosphere, the earliest single celled heterotrophic micro
organisms probably used which of the following to produce
energy to drive metabolic processes?
A) photosynthesis
B) anaerobic cellular respiration
C) oxidative phosphorylation
D) aerobic cellular respiration
A: B
Q12: On a coral reef in the Florida Keys, a population of damselfish
has to color variation: brown and pink. These fish seek habitats
that provide good camouflage, so brown individuals mostly
associate with stands brown Elkhorn coral and pink individuals
are found exclusively in colonies of pink finger coral. Meeting
occurs within these coral patches, with females laying eggs
