BIO 182 IN FINAL EXAM WITH
CORRECT QUESTIONS AND ANSWERS
2025
Which of the following is the correct sequence of these events in the origin of life? - CORRECT-
ANSWERS****II. synthesis of organic monomers
III. Synthesis of organic polymers
I. Formation of protocells
IV. Formation of DNA- based genetic system
During drought years on the Galapagos, small, easily eaten seeds become rare, leaving mostly
large, hard-cased seeds that only birds with large beaks can eat. If a drought persists for
several years, what should one expect to result from natural selection? - CORRECT-
ANSWERS****More small- beaked birds dying than larger-beaked birds. The offspring
produced in subsequent generations have a higher percentage of birds with large beaks.
A rapid method of speciation that has been important in the history of flowering plants is -
CORRECT-ANSWERS****Polyploidy
In evolutionary terms, the more closely related two different organisms are, the - CORRECT-
ANSWERS****more recently they shared a common ancestor
,Given a population that contains genetic variation, what is the correct sequence of the
following events, under the influence of natural selection?
1. Well-adapted individuals leave more offspring than do poorly adapted individuals.
2. A change occurs in the environment.
3. Genetic frequencies within the population change.
4. Poorly adapted individuals have decreased survivorship. - CORRECT-ANSWERS****2.
Change occurs in the environment
4. Poorly adapted individuals have decreased survivorship
1. Well-adapted individuals leave more offspring than do poorly adapted individuals
3. Genetic frequencies within the population change.
Natural Selection is based on all of the following except - CORRECT-
ANSWERS****Individuals adapt to their environment and, thereby evolve.
Which statement about natural selection is most correct? - CORRECT-ANSWERS****Well-
Adapted individuals leave more offspring, and thus contribute more to the next generations
gene pool, than do poorly adapted individuals .
What probably accounts for the switch to DNA-based genetic systems during the evolution of
life on earth? - CORRECT-ANSWERS****DNA is chemically more stable and replicates with
fewer errors (mutations) than RNA
,A biologist studied a population of squirrels for 15 years. During that time, the population was
never fewer than 30 squirrels and never more than 45. Her data showed that over half of the
squirrels born did not survive to reproduce, because of competition for food and predation. In a
single generation, 90% of the squirrels that were born lived to reproduce, and the population
increased to 80. What inferences might you make about this population? - CORRECT-
ANSWERS****A. The amount of available food may have increased
B. The number of predators may have decreased
C. The Squirrels of subsequent generations should show greater levels of variation than
previous
A defining characteristic of allopatric speciation is - CORRECT-ANSWERS****geographic
isolation
How many half-lives should have elapsed if 3.125% of the parent isotope remains in a fossil at
the time of analysis - CORRECT-ANSWERS****Five
In binomial nomenclature where humans are: Homo Sapiens Homo is the - CORRECT-
ANSWERS****genus
The common housefly belongs o all of the following taxa. Assuming you had access to
textbooks or other scientific literature, knowing which of the following should provide you with
, the most specific information about the common housefly? - CORRECT-ANSWERS****Genus
Musca
Which of these conditions should completely prevent the occurrence of natural selection in a
population over
time?
A) All variation between individuals is due only to environmental factors.
B) The environment is changing at a relatively slow rate.
C) The population size is large.
D) The population lives in a habitat where there are no competing species present. - CORRECT-
ANSWERS****A. All variation between individuals is due only to environmental factors
What would be the best technique for determining the evolutionary relationships among
several closely related species, each of which still contains living members? - CORRECT-
ANSWERS****DNA or protein analysis
What is thought to be the correct sequence of these events, from earliest to most recent in the
evolution of life on earth ?
1. origin of mitochondria
2. origin of multi cellular Eukaryotas
3. origin of chloroplasts
CORRECT QUESTIONS AND ANSWERS
2025
Which of the following is the correct sequence of these events in the origin of life? - CORRECT-
ANSWERS****II. synthesis of organic monomers
III. Synthesis of organic polymers
I. Formation of protocells
IV. Formation of DNA- based genetic system
During drought years on the Galapagos, small, easily eaten seeds become rare, leaving mostly
large, hard-cased seeds that only birds with large beaks can eat. If a drought persists for
several years, what should one expect to result from natural selection? - CORRECT-
ANSWERS****More small- beaked birds dying than larger-beaked birds. The offspring
produced in subsequent generations have a higher percentage of birds with large beaks.
A rapid method of speciation that has been important in the history of flowering plants is -
CORRECT-ANSWERS****Polyploidy
In evolutionary terms, the more closely related two different organisms are, the - CORRECT-
ANSWERS****more recently they shared a common ancestor
,Given a population that contains genetic variation, what is the correct sequence of the
following events, under the influence of natural selection?
1. Well-adapted individuals leave more offspring than do poorly adapted individuals.
2. A change occurs in the environment.
3. Genetic frequencies within the population change.
4. Poorly adapted individuals have decreased survivorship. - CORRECT-ANSWERS****2.
Change occurs in the environment
4. Poorly adapted individuals have decreased survivorship
1. Well-adapted individuals leave more offspring than do poorly adapted individuals
3. Genetic frequencies within the population change.
Natural Selection is based on all of the following except - CORRECT-
ANSWERS****Individuals adapt to their environment and, thereby evolve.
Which statement about natural selection is most correct? - CORRECT-ANSWERS****Well-
Adapted individuals leave more offspring, and thus contribute more to the next generations
gene pool, than do poorly adapted individuals .
What probably accounts for the switch to DNA-based genetic systems during the evolution of
life on earth? - CORRECT-ANSWERS****DNA is chemically more stable and replicates with
fewer errors (mutations) than RNA
,A biologist studied a population of squirrels for 15 years. During that time, the population was
never fewer than 30 squirrels and never more than 45. Her data showed that over half of the
squirrels born did not survive to reproduce, because of competition for food and predation. In a
single generation, 90% of the squirrels that were born lived to reproduce, and the population
increased to 80. What inferences might you make about this population? - CORRECT-
ANSWERS****A. The amount of available food may have increased
B. The number of predators may have decreased
C. The Squirrels of subsequent generations should show greater levels of variation than
previous
A defining characteristic of allopatric speciation is - CORRECT-ANSWERS****geographic
isolation
How many half-lives should have elapsed if 3.125% of the parent isotope remains in a fossil at
the time of analysis - CORRECT-ANSWERS****Five
In binomial nomenclature where humans are: Homo Sapiens Homo is the - CORRECT-
ANSWERS****genus
The common housefly belongs o all of the following taxa. Assuming you had access to
textbooks or other scientific literature, knowing which of the following should provide you with
, the most specific information about the common housefly? - CORRECT-ANSWERS****Genus
Musca
Which of these conditions should completely prevent the occurrence of natural selection in a
population over
time?
A) All variation between individuals is due only to environmental factors.
B) The environment is changing at a relatively slow rate.
C) The population size is large.
D) The population lives in a habitat where there are no competing species present. - CORRECT-
ANSWERS****A. All variation between individuals is due only to environmental factors
What would be the best technique for determining the evolutionary relationships among
several closely related species, each of which still contains living members? - CORRECT-
ANSWERS****DNA or protein analysis
What is thought to be the correct sequence of these events, from earliest to most recent in the
evolution of life on earth ?
1. origin of mitochondria
2. origin of multi cellular Eukaryotas
3. origin of chloroplasts
