BIO 1407 Final Exam Review Questions With Complete
Solutions
A new plant species C, which formed from hybridization of
species A (2n = 20) with species B (2n= 16) (chromosomes),
would probably produce gametes with a chromosome number
of. (Hint, It will always go halfway between the two numbers of
chromosomes for the hybrid species) Correct Answers 18
A swim bladder is a gas-filled sac that helps fish maintain
buoyancy. Evidence indicates that early fish gulped air into
primitive lungs, helping them survive in stagnant waters. The
evolution of the swim bladder from lungs of an ancestral fish is
an example of Correct Answers Exaptation
Ancient photosynthetic prokaryotes were very important in the
history of life because they______ Correct Answers Produced
oxygen
Changes in the seasons are caused by___ Correct Answers Tilt
of the Earth's axis
How can a detrimental allele remain in a population? Correct
Answers Heterozygote advantage, frequency-dependent
selection
How can an individual organism increase its relative fitness?
Correct Answers By producing more viable offspring
How could a gardener reduce interspecific competition in his
seedlings? Correct Answers Plant them in separate areas
, How does antibiotic and antiviral resistance play into natural
selection? Correct Answers Increases survival of resistant
individuals
How is genetic variation preserved in populations? Correct
Answers Sexual reproduction, mutation, gene flow
How much of the Earth's land area is considered protected?
Correct Answers About 15%
How would you best measure an organism's fitness? Correct
Answers Reproductive success
How would you choose an outgroup for your ingroup within a
phylogenetic tree? Correct Answers Choose a taxon that is
closely related to the ingroup but branched off before the most
recent common ancestor
How would you tell the difference between a fungus and an
animal? Correct Answers Fungi have cell walls and
heterotrophic cell walls
How would you test if ulcers are caused by bacteria? Correct
Answers Test for presence of Helicobacter pylori bacteria
In a population with two alleles, B and b, the allele frequency of
b is 0.5. B is dominant to b. What is the frequency of individuals
with the homozygous dominant phenotype if the population is in
Hardy-Weinberg equilibrium? Correct Answers 0.25
Solutions
A new plant species C, which formed from hybridization of
species A (2n = 20) with species B (2n= 16) (chromosomes),
would probably produce gametes with a chromosome number
of. (Hint, It will always go halfway between the two numbers of
chromosomes for the hybrid species) Correct Answers 18
A swim bladder is a gas-filled sac that helps fish maintain
buoyancy. Evidence indicates that early fish gulped air into
primitive lungs, helping them survive in stagnant waters. The
evolution of the swim bladder from lungs of an ancestral fish is
an example of Correct Answers Exaptation
Ancient photosynthetic prokaryotes were very important in the
history of life because they______ Correct Answers Produced
oxygen
Changes in the seasons are caused by___ Correct Answers Tilt
of the Earth's axis
How can a detrimental allele remain in a population? Correct
Answers Heterozygote advantage, frequency-dependent
selection
How can an individual organism increase its relative fitness?
Correct Answers By producing more viable offspring
How could a gardener reduce interspecific competition in his
seedlings? Correct Answers Plant them in separate areas
, How does antibiotic and antiviral resistance play into natural
selection? Correct Answers Increases survival of resistant
individuals
How is genetic variation preserved in populations? Correct
Answers Sexual reproduction, mutation, gene flow
How much of the Earth's land area is considered protected?
Correct Answers About 15%
How would you best measure an organism's fitness? Correct
Answers Reproductive success
How would you choose an outgroup for your ingroup within a
phylogenetic tree? Correct Answers Choose a taxon that is
closely related to the ingroup but branched off before the most
recent common ancestor
How would you tell the difference between a fungus and an
animal? Correct Answers Fungi have cell walls and
heterotrophic cell walls
How would you test if ulcers are caused by bacteria? Correct
Answers Test for presence of Helicobacter pylori bacteria
In a population with two alleles, B and b, the allele frequency of
b is 0.5. B is dominant to b. What is the frequency of individuals
with the homozygous dominant phenotype if the population is in
Hardy-Weinberg equilibrium? Correct Answers 0.25
