BIOL 152 FINAL UPDATED ACTUAL
Exam Questions and CORRECT Answers
Which of the following is correctly defined?
A. Genotype = the combination of alleles in an individual.
B. Osmosis = active transport of molecules through a membrane.
C. Meiosis = cellular division that reduces the number of chromosomes by half.
D. Genetic drift = movement of individuals or gametes between populations of the same species.
E. Synapomorphy = a trait that evolved at the base of a clade and was passed down to several
descendant lineages - CORRECT ANSWER - A. Genotype = the combination of alleles in
an individual.
C. Meiosis = cellular division that reduces the number of chromosomes by half.
E. Synapomorphy = a trait that evolved at the base of a clade and was passed down to several
descendant lineages
Which of the following statements are correct?(select all that apply)
A. An adaptive trait in the current generation will also be adaptive in future generations.
B. A dominant allele is always more common than a recessive allele.
C. One explanation for the historical global distribution of different human skin colors is that UV
radiation damages folate.
D. An allele is one copy of one version of a gene
E. All organisms require meiosis as part of their life cycle - CORRECT ANSWER - C.
One explanation for the historical global distribution of different human skin colors is that UV
radiation damages folate.
Which of the following could be evolution?
A. The addition of a new allele into a population
B. Change in which version of a genetic trait is most common
C. Change in allele frequencies
D. Change in genotype proportions
,E. All these options are true. - CORRECT ANSWER - E. All these options are true.
The population of plants have variation in petal color, pink or purple (a genetic trait). Which of
the following is genetic drift?
A. A tornado rips through the population and happens to kill most plants that have purple petals.
B. A few seeds with alleles for just pink petals stick to a bird and start a new far-off population.
C. The pink alleles happen to end up in a few more seeds (offspring) than the purple alleles by
chance.
D. A and B are genetic drift.
E. A, B and C are genetic drift - CORRECT ANSWER - E. A, B and C are genetic drift
A = Bottleneck
B = Founder effect
C = Random "Sampling"
Which of the following statements are correct?(select all that apply)
A. A homologous trait is a trait found in two or more species that was inherited from their
common ancestor.
B. The biological species concept focuses on whether individuals from different
groups/populations are potentially able to form viable and fertile offspring together.
C. A taxon is a group of individuals of the same species in one geographic area.
D. Allopatry is a type of post-zygotic isolating barrier.
E. Vicariance can lead to allopatric speciation - CORRECT ANSWER - A. A homologous
trait is a trait found in two or more species that was inherited from their common ancestor.
B. The biological species concept focuses on whether individuals from different
groups/populations are potentially able to form viable and fertile offspring together.
E. Vicariance can lead to allopatric speciation
Which of the following is TRUE of the timeline of life?
A. Eukaryotes appeared before prokaryotes.
B. The Cambrian explosion was a mass extinction.
, C. The first land plants evolved after the appearance of animals.
D. Life first appeared on Earth approximately 3.6 billion years ago.
E. The diversification of primates caused an adaptive radiation in dinosaurs. - CORRECT
ANSWER - C. The first land plants evolved after the appearance of animals.
D. Life first appeared on Earth approximately 3.6 billion years ago.
Which of the following statements are correct?(select all that apply)
A. Natural selection randomly or stochastically changes the likelihood of reproductive success
among individuals in a population.
B. Plants are generally photoautotrophs.
C. For individuals with complex multicellularity, every cell of the organism must fulfill all
necessary functions of the body.
D. An example of bulk flow in plants is the transportation of dissolved sugars from leaves to
growing tissues.
E. All protists are eukaryotes - CORRECT ANSWER - B. Plants are generally
photoautotrophs.
D. An example of bulk flow in plants is the transportation of dissolved sugars from leaves to
growing tissues.
E. All protists are eukaryotes
which of the following statements are correct?
A. Heterotrophs generally obtain energy by consuming another organism
B. An example of bulk flow is the movement of blood within an animal body
C. Algae are photoautotrophs and Protozoa are chemoheterotrophs
D. All bacteria have mitochondria
E. Prokaryotes may generate new alleles during meiosis - CORRECT ANSWER - A.
Heterotrophs generally obtain energy by consuming another organism
B. An example of bulk flow is the movement of blood within an animal body
C. Algae are photoautotrophs and Protozoa are chemoheterotrophs
Exam Questions and CORRECT Answers
Which of the following is correctly defined?
A. Genotype = the combination of alleles in an individual.
B. Osmosis = active transport of molecules through a membrane.
C. Meiosis = cellular division that reduces the number of chromosomes by half.
D. Genetic drift = movement of individuals or gametes between populations of the same species.
E. Synapomorphy = a trait that evolved at the base of a clade and was passed down to several
descendant lineages - CORRECT ANSWER - A. Genotype = the combination of alleles in
an individual.
C. Meiosis = cellular division that reduces the number of chromosomes by half.
E. Synapomorphy = a trait that evolved at the base of a clade and was passed down to several
descendant lineages
Which of the following statements are correct?(select all that apply)
A. An adaptive trait in the current generation will also be adaptive in future generations.
B. A dominant allele is always more common than a recessive allele.
C. One explanation for the historical global distribution of different human skin colors is that UV
radiation damages folate.
D. An allele is one copy of one version of a gene
E. All organisms require meiosis as part of their life cycle - CORRECT ANSWER - C.
One explanation for the historical global distribution of different human skin colors is that UV
radiation damages folate.
Which of the following could be evolution?
A. The addition of a new allele into a population
B. Change in which version of a genetic trait is most common
C. Change in allele frequencies
D. Change in genotype proportions
,E. All these options are true. - CORRECT ANSWER - E. All these options are true.
The population of plants have variation in petal color, pink or purple (a genetic trait). Which of
the following is genetic drift?
A. A tornado rips through the population and happens to kill most plants that have purple petals.
B. A few seeds with alleles for just pink petals stick to a bird and start a new far-off population.
C. The pink alleles happen to end up in a few more seeds (offspring) than the purple alleles by
chance.
D. A and B are genetic drift.
E. A, B and C are genetic drift - CORRECT ANSWER - E. A, B and C are genetic drift
A = Bottleneck
B = Founder effect
C = Random "Sampling"
Which of the following statements are correct?(select all that apply)
A. A homologous trait is a trait found in two or more species that was inherited from their
common ancestor.
B. The biological species concept focuses on whether individuals from different
groups/populations are potentially able to form viable and fertile offspring together.
C. A taxon is a group of individuals of the same species in one geographic area.
D. Allopatry is a type of post-zygotic isolating barrier.
E. Vicariance can lead to allopatric speciation - CORRECT ANSWER - A. A homologous
trait is a trait found in two or more species that was inherited from their common ancestor.
B. The biological species concept focuses on whether individuals from different
groups/populations are potentially able to form viable and fertile offspring together.
E. Vicariance can lead to allopatric speciation
Which of the following is TRUE of the timeline of life?
A. Eukaryotes appeared before prokaryotes.
B. The Cambrian explosion was a mass extinction.
, C. The first land plants evolved after the appearance of animals.
D. Life first appeared on Earth approximately 3.6 billion years ago.
E. The diversification of primates caused an adaptive radiation in dinosaurs. - CORRECT
ANSWER - C. The first land plants evolved after the appearance of animals.
D. Life first appeared on Earth approximately 3.6 billion years ago.
Which of the following statements are correct?(select all that apply)
A. Natural selection randomly or stochastically changes the likelihood of reproductive success
among individuals in a population.
B. Plants are generally photoautotrophs.
C. For individuals with complex multicellularity, every cell of the organism must fulfill all
necessary functions of the body.
D. An example of bulk flow in plants is the transportation of dissolved sugars from leaves to
growing tissues.
E. All protists are eukaryotes - CORRECT ANSWER - B. Plants are generally
photoautotrophs.
D. An example of bulk flow in plants is the transportation of dissolved sugars from leaves to
growing tissues.
E. All protists are eukaryotes
which of the following statements are correct?
A. Heterotrophs generally obtain energy by consuming another organism
B. An example of bulk flow is the movement of blood within an animal body
C. Algae are photoautotrophs and Protozoa are chemoheterotrophs
D. All bacteria have mitochondria
E. Prokaryotes may generate new alleles during meiosis - CORRECT ANSWER - A.
Heterotrophs generally obtain energy by consuming another organism
B. An example of bulk flow is the movement of blood within an animal body
C. Algae are photoautotrophs and Protozoa are chemoheterotrophs
