Bio 117 WVU UPDATED ACTUAL Exam
Questions and CORRECT Answers
which evolutionary process results in adaptation? - CORRECT ANSWER - Natural
selection is the only evolutionary process that results in adaptation
Stabilizing selection - CORRECT ANSWER - favors the intermediate phenotype, and
selects against extremes in a population
Disruptive selection - CORRECT ANSWER - favors extreme phenotypes, and selects
against intermediate phenotypes
Directional selection - CORRECT ANSWER - favors one extreme phenotype, and selects
against the other phenotypes
natural selection - CORRECT ANSWER - A process in which individuals that have
certain inherited traits tend to survive and reproduce at higher rates than other individuals
because of those traits.
gene flow - CORRECT ANSWER - is the movement of alleles between populations
If gene flow in a population introduces a beneficial allele, then fitness will - CORRECT
ANSWER -
ancestoral trait - CORRECT ANSWER - trait shared by a group of organisms as a result of
descent from a common ancestor
derived trait - CORRECT ANSWER - a trait that differs from the ancestral trait
, Clade - CORRECT ANSWER - A group of species that includes an ancestral species and
all its descendants.
Synapomorphy - CORRECT ANSWER - shared derived trait
homoplastic traits - CORRECT ANSWER - similar traits generated by convergent
evolution and evolutionary reversals
polyphyletic group - CORRECT ANSWER - does not include the common ancestor
genetic drift - CORRECT ANSWER - random change in allele frequencies that occurs in
small populations
founder effect - CORRECT ANSWER - change in allele frequencies as a result of the
migration of a small subgroup of a population
bottleneck effect - CORRECT ANSWER - Genetic drift resulting from the reduction of a
population, typically by a natural disaster, such that the surviving population is no longer
genetically representative of the original population.
sister taxa - CORRECT ANSWER - groups that share an immediate common ancestor
Out group - CORRECT ANSWER -
parsimonious - CORRECT ANSWER - most simple;
tree with the fewest amount of changes
Biological Species Concept - CORRECT ANSWER - Can potentially interbreed
Maintain connectedness over geographic distances
Questions and CORRECT Answers
which evolutionary process results in adaptation? - CORRECT ANSWER - Natural
selection is the only evolutionary process that results in adaptation
Stabilizing selection - CORRECT ANSWER - favors the intermediate phenotype, and
selects against extremes in a population
Disruptive selection - CORRECT ANSWER - favors extreme phenotypes, and selects
against intermediate phenotypes
Directional selection - CORRECT ANSWER - favors one extreme phenotype, and selects
against the other phenotypes
natural selection - CORRECT ANSWER - A process in which individuals that have
certain inherited traits tend to survive and reproduce at higher rates than other individuals
because of those traits.
gene flow - CORRECT ANSWER - is the movement of alleles between populations
If gene flow in a population introduces a beneficial allele, then fitness will - CORRECT
ANSWER -
ancestoral trait - CORRECT ANSWER - trait shared by a group of organisms as a result of
descent from a common ancestor
derived trait - CORRECT ANSWER - a trait that differs from the ancestral trait
, Clade - CORRECT ANSWER - A group of species that includes an ancestral species and
all its descendants.
Synapomorphy - CORRECT ANSWER - shared derived trait
homoplastic traits - CORRECT ANSWER - similar traits generated by convergent
evolution and evolutionary reversals
polyphyletic group - CORRECT ANSWER - does not include the common ancestor
genetic drift - CORRECT ANSWER - random change in allele frequencies that occurs in
small populations
founder effect - CORRECT ANSWER - change in allele frequencies as a result of the
migration of a small subgroup of a population
bottleneck effect - CORRECT ANSWER - Genetic drift resulting from the reduction of a
population, typically by a natural disaster, such that the surviving population is no longer
genetically representative of the original population.
sister taxa - CORRECT ANSWER - groups that share an immediate common ancestor
Out group - CORRECT ANSWER -
parsimonious - CORRECT ANSWER - most simple;
tree with the fewest amount of changes
Biological Species Concept - CORRECT ANSWER - Can potentially interbreed
Maintain connectedness over geographic distances
