BIO 101 nvcc final EXAM TEST QUESTIONS AND
ANSWRED VERIFIED 100% CORRECT
Which of the following supports the idea that all organisms share a
common ancestry?
A. All cells use DNA as a cellular energy carrier
B. All cells use ATP as the template for protein synthesis
C. All cells use the same collection of lipids
D. All cells use amino acids as a carrier of genetic information E. All cells
have a similar biochemistry, including amino acids, nucleic acids, and
ATP - ANSWER E. All cells have a similar biochemistry, including
amino acids, nucleic acids, and ATP
Strong evidence for the common ancestry of all vertebrates is:
A. they all have legs
B. their means of reproduction
C. the similarity of their embryological stages
D. they all evolved from fish
E. they all possess DNA - ANSWER C. the similarity of their
embryological stages
Most commercial pesticides are effective for only two or three years
because:
A. new pests invade the area
B. the chemicals induce mutations that provide immunity
C. the chemicals mutate and become ineffective
D. the pests learn to hide when the chemicals are being applied E. those
pests born with mutations that provide immunity will survive and
reproduce - ANSWER E. those pests born with mutations that provide
immunity will survive and reproduce
Which of the following would you predict would evolve in guppies that are
taken from streams in Trinidad with predators and put into streams lacking
predators?
,A. Male guppies will become more colorful
B. Male guppies will become less colorful
C. Male guppies will not change in coloration
D. Guppies would evolve to have females avoid more colorful males
E. Guppies would evolve to have females prefer less colorful males -
ANSWER A. Male guppies will become more colorful
A population is defined as:
A. all individuals of the same species located throughout the world B. all
individuals of the same species located in a given geographic region
C. all individuals of all species located throughout the world
D. all individuals of all species located in a given country E. those
individuals of the same species that have an identical genetic makeup
- ANSWER D. all individuals of all species located in a given country
The interaction of genes and environment produces a specific:
A. genotype
B. allele
C. population
D. phenotype
E. gene pool - ANSWER D. phenotype
The gene pool for a particular gene is made up of:
A. all the genes that occur in the population
B. all the genes for a certain trait that occur in the population
C. the sum of all the heterozygous individuals in the population
D. the sum of all the homozygous individuals in the population
E. all the alleles for a certain trait in a given individual - ANSWER A. all
the genes that occur in the population
In a very small population of birds, assume 5 out of 20 alleles are the type
that code for blue feathers. What is the allele frequency of the "blue feather
allele" in this population?
A. 0.20
B. 0.25
, C. 0.40
D. 0.50
E. 5 - ANSWER B. 0.25
According to the Hardy-Weinberg principle, if 75% of the alleles in the
gene pool are A1 and 25% are A2, what is the proportion of individuals with
genotype A1A2 in this population?
A. 0.1875
B. 0.5625
C. 0.375
D. 0.0625
E. 0.025 - ANSWER A. 0.1875
Imagine that one of the original four mice that escape from a research lab
is blind due to a genetic defect. If the mice breed and most of the mice born
in subsequent generations are blind from birth, this is most likely a case of:
A. artificial selection
B. the founder effect
C. selective mutation
D. an equilibrium population
E. natural selection - ANSWER B. the founder effect
Which of the following can cause evolutionary change in a small
population?
A. genetic drift
B. lack of mutations
C. homozygous individuals
D. all recessive alleles
E. lack of gene flow - ANSWER A. genetic drift
Which of the following is MOST likely to experience genetic drift? A. a
population of endangered birds that includes only five individuals
B. a population of common rodents that includes millions of
individuals
ANSWRED VERIFIED 100% CORRECT
Which of the following supports the idea that all organisms share a
common ancestry?
A. All cells use DNA as a cellular energy carrier
B. All cells use ATP as the template for protein synthesis
C. All cells use the same collection of lipids
D. All cells use amino acids as a carrier of genetic information E. All cells
have a similar biochemistry, including amino acids, nucleic acids, and
ATP - ANSWER E. All cells have a similar biochemistry, including
amino acids, nucleic acids, and ATP
Strong evidence for the common ancestry of all vertebrates is:
A. they all have legs
B. their means of reproduction
C. the similarity of their embryological stages
D. they all evolved from fish
E. they all possess DNA - ANSWER C. the similarity of their
embryological stages
Most commercial pesticides are effective for only two or three years
because:
A. new pests invade the area
B. the chemicals induce mutations that provide immunity
C. the chemicals mutate and become ineffective
D. the pests learn to hide when the chemicals are being applied E. those
pests born with mutations that provide immunity will survive and
reproduce - ANSWER E. those pests born with mutations that provide
immunity will survive and reproduce
Which of the following would you predict would evolve in guppies that are
taken from streams in Trinidad with predators and put into streams lacking
predators?
,A. Male guppies will become more colorful
B. Male guppies will become less colorful
C. Male guppies will not change in coloration
D. Guppies would evolve to have females avoid more colorful males
E. Guppies would evolve to have females prefer less colorful males -
ANSWER A. Male guppies will become more colorful
A population is defined as:
A. all individuals of the same species located throughout the world B. all
individuals of the same species located in a given geographic region
C. all individuals of all species located throughout the world
D. all individuals of all species located in a given country E. those
individuals of the same species that have an identical genetic makeup
- ANSWER D. all individuals of all species located in a given country
The interaction of genes and environment produces a specific:
A. genotype
B. allele
C. population
D. phenotype
E. gene pool - ANSWER D. phenotype
The gene pool for a particular gene is made up of:
A. all the genes that occur in the population
B. all the genes for a certain trait that occur in the population
C. the sum of all the heterozygous individuals in the population
D. the sum of all the homozygous individuals in the population
E. all the alleles for a certain trait in a given individual - ANSWER A. all
the genes that occur in the population
In a very small population of birds, assume 5 out of 20 alleles are the type
that code for blue feathers. What is the allele frequency of the "blue feather
allele" in this population?
A. 0.20
B. 0.25
, C. 0.40
D. 0.50
E. 5 - ANSWER B. 0.25
According to the Hardy-Weinberg principle, if 75% of the alleles in the
gene pool are A1 and 25% are A2, what is the proportion of individuals with
genotype A1A2 in this population?
A. 0.1875
B. 0.5625
C. 0.375
D. 0.0625
E. 0.025 - ANSWER A. 0.1875
Imagine that one of the original four mice that escape from a research lab
is blind due to a genetic defect. If the mice breed and most of the mice born
in subsequent generations are blind from birth, this is most likely a case of:
A. artificial selection
B. the founder effect
C. selective mutation
D. an equilibrium population
E. natural selection - ANSWER B. the founder effect
Which of the following can cause evolutionary change in a small
population?
A. genetic drift
B. lack of mutations
C. homozygous individuals
D. all recessive alleles
E. lack of gene flow - ANSWER A. genetic drift
Which of the following is MOST likely to experience genetic drift? A. a
population of endangered birds that includes only five individuals
B. a population of common rodents that includes millions of
individuals
