BIO 101: Exam 1 (Illinois State University) 2026 | Questions
& Verified Answers | Latest Update | Graded A+
1. If a mountain range forms between two populations of a species, what
evolutionary process is likely to occur over time?
Sympatric speciation
Allopatric speciation
Adaptive radiation
Convergent evolution
2. What does Mendelian inheritance specifically describe regarding allele
transfer?
An all-or-nothing pattern of inheritance
The influence of environmental factors
A continuous variation of traits
The blending of parental traits
3. What is the definition of a population in biology?
A group of organisms that can interbreed and produce fertile
offspring.
A collection of different species interacting in a habitat.
A group of individuals of the same species living in the same
environment.
All organisms of a particular species on Earth.
4. What are the steps of the scientific method?
, ask a question, do background research, construct a hypothesis,
test the hypothesis, analyze the data, report the results
ask a question, replicate a previous study, construct a hypothesis, test
the hypothesis, analyze the data, report the results
do background research, replicate a previous study, ask a question,
construct a hypothesis, test the hypothesis, report the results
do background research, ask a question, test the hypothesis, analyze
the data, replicate the study
5. What is homology?
making a verbal comparison between two things that are not related
in any way
when members of different species share common features, but do
not come from a common ancestor
the shape and size of the anatomical features of an organism
when members of different species inherited common features from
a common ancestor
6. Genotype refers to
how the genes are changed or mutated in an organism
the genes in an operon
the genes and alleles present in an organism
how the genes are expressed in the organism
7. Independent Assortment states that:
Two copies of each gene segregate into gametes.
Gene segregate into gametes independently of other copies.
, Two copies of each gene inherited from mom and dad segregate
into gametes independently of the two copies of another gene.
Two copies of each gene segregate into gametes dependent on two
copies of another gene.
8. What is the primary outcome of natural selection?
Genetic mutation
Differential reproduction
Environmental adaptation
Species extinction
9. In a population of plants that reproduce asexually, what would be the likely
impact on the population's ability to adapt to environmental changes?
Enhanced adaptation through rapid reproduction.
Reduced ability to adapt due to lack of genetic variation.
No impact on adaptation as all traits are beneficial.
Increased ability to adapt due to uniform traits.
10. What is an organism?
a group of individuals of the same species living in the same area at
the same time
All different populations living in the same area
the part of Earth where life exists
An individual living thing
11. The term inheritance refers to which of the following?
, The study of development from the time of fertilization to birth.
The development occurring at birth and continuing to maturity.
The transfer of genetically determined characteristics from
generation to generation.
The study of the mechanisms responsible for passing on traits.
12. Epigenetic inheritance is defined as
the inheritance of mRNA from one cell generation to the next.
the inheritance from one generation the next of traits that do not
seem to be transmitted by mechanisms involving the nucleotide
sequence directly, but instead appear to be dependent on
chromatin modifications.
none of the above.
the inheritance of nuclear DNA from one cell generation to the next.
the inheritance of extra-chromosomal DNA from one cell generation
to the next.
13. What term describes the movement of an organism in response to a
chemical stimulus?
Thigmotropism
Hydrotropism
Phototropism
Chemotaxis
14. What term describes the process of maintaining internal balance in
biological systems?
Photosynthesis
& Verified Answers | Latest Update | Graded A+
1. If a mountain range forms between two populations of a species, what
evolutionary process is likely to occur over time?
Sympatric speciation
Allopatric speciation
Adaptive radiation
Convergent evolution
2. What does Mendelian inheritance specifically describe regarding allele
transfer?
An all-or-nothing pattern of inheritance
The influence of environmental factors
A continuous variation of traits
The blending of parental traits
3. What is the definition of a population in biology?
A group of organisms that can interbreed and produce fertile
offspring.
A collection of different species interacting in a habitat.
A group of individuals of the same species living in the same
environment.
All organisms of a particular species on Earth.
4. What are the steps of the scientific method?
, ask a question, do background research, construct a hypothesis,
test the hypothesis, analyze the data, report the results
ask a question, replicate a previous study, construct a hypothesis, test
the hypothesis, analyze the data, report the results
do background research, replicate a previous study, ask a question,
construct a hypothesis, test the hypothesis, report the results
do background research, ask a question, test the hypothesis, analyze
the data, replicate the study
5. What is homology?
making a verbal comparison between two things that are not related
in any way
when members of different species share common features, but do
not come from a common ancestor
the shape and size of the anatomical features of an organism
when members of different species inherited common features from
a common ancestor
6. Genotype refers to
how the genes are changed or mutated in an organism
the genes in an operon
the genes and alleles present in an organism
how the genes are expressed in the organism
7. Independent Assortment states that:
Two copies of each gene segregate into gametes.
Gene segregate into gametes independently of other copies.
, Two copies of each gene inherited from mom and dad segregate
into gametes independently of the two copies of another gene.
Two copies of each gene segregate into gametes dependent on two
copies of another gene.
8. What is the primary outcome of natural selection?
Genetic mutation
Differential reproduction
Environmental adaptation
Species extinction
9. In a population of plants that reproduce asexually, what would be the likely
impact on the population's ability to adapt to environmental changes?
Enhanced adaptation through rapid reproduction.
Reduced ability to adapt due to lack of genetic variation.
No impact on adaptation as all traits are beneficial.
Increased ability to adapt due to uniform traits.
10. What is an organism?
a group of individuals of the same species living in the same area at
the same time
All different populations living in the same area
the part of Earth where life exists
An individual living thing
11. The term inheritance refers to which of the following?
, The study of development from the time of fertilization to birth.
The development occurring at birth and continuing to maturity.
The transfer of genetically determined characteristics from
generation to generation.
The study of the mechanisms responsible for passing on traits.
12. Epigenetic inheritance is defined as
the inheritance of mRNA from one cell generation to the next.
the inheritance from one generation the next of traits that do not
seem to be transmitted by mechanisms involving the nucleotide
sequence directly, but instead appear to be dependent on
chromatin modifications.
none of the above.
the inheritance of nuclear DNA from one cell generation to the next.
the inheritance of extra-chromosomal DNA from one cell generation
to the next.
13. What term describes the movement of an organism in response to a
chemical stimulus?
Thigmotropism
Hydrotropism
Phototropism
Chemotaxis
14. What term describes the process of maintaining internal balance in
biological systems?
Photosynthesis
