KU BIOL 152 EXAM ONE UPDATED
ACTUAL Exam Questions and CORRECT
Answers
What must be present before natural selection can act upon a population? - CORRECT
ANSWER - Genetic variation
Most Swiss Starlings produce four to five eggs in each clutch. Starlings producing fewer or more
than this have reduced fitness. This situation can be described by what? - CORRECT
ANSWER - Stabilizing selection
Genetic drift, gene flow, mutation, natural selection and non random mating have a better chance
of influencing gene frequencies in a small population. But which one has the most consistency
with needing a small population? - CORRECT ANSWER - Genetic drift
p+q= - CORRECT ANSWER -1
p²+2pq+q²= - CORRECT ANSWER -1
p= - CORRECT ANSWER - frequency of "A" alleles
q= - CORRECT ANSWER - frequency of "a" alleles
p²= - CORRECT ANSWER - frequency of AA genotype
2pq= - CORRECT ANSWER - frequency of Aa genotype
q²= - CORRECT ANSWER - frequency of aa genotype
, What happens when one of the conditions of Hardy Weinberg are not met? - CORRECT
ANSWER - evolution
In seed cracker finches from cameroon, small billed and large billed birds specialize in cracking
soft and hard seeds respectively. If long term climactic change resulted in all seeds becoming
hard, what type of selection would then operate in the finch population? - CORRECT
ANSWER - Directional selection; when conditions favor individuals with one extreme of a
phenotype (common with environment changes and migration)
Disruptive selection - CORRECT ANSWER - when conditions favor an individual with
both extremes of a phenotype over individuals with intermediate phenotypes
Stabilizing selection - CORRECT ANSWER - when conditions favor intermediate
phenotypes rather than extremes
Most consistent at causing populations to become better suited to their environment over the
course of generations. - CORRECT ANSWER - Natural selection
Diversity is understood to be a result of genetic variation. What is a recognized source for
evolution? - CORRECT ANSWER - Recombination by crossing over in mitosis
Biological species concept - CORRECT ANSWER - defines a species as a group of
populations that have the ability to interbreed and produce viable offspring
Morphological species concept - CORRECT ANSWER - defines a species based on body
shape and structural features
Phylogenetic species concept - CORRECT ANSWER - defines a species by the smallest
group of individuals that share a common ancestor
ACTUAL Exam Questions and CORRECT
Answers
What must be present before natural selection can act upon a population? - CORRECT
ANSWER - Genetic variation
Most Swiss Starlings produce four to five eggs in each clutch. Starlings producing fewer or more
than this have reduced fitness. This situation can be described by what? - CORRECT
ANSWER - Stabilizing selection
Genetic drift, gene flow, mutation, natural selection and non random mating have a better chance
of influencing gene frequencies in a small population. But which one has the most consistency
with needing a small population? - CORRECT ANSWER - Genetic drift
p+q= - CORRECT ANSWER -1
p²+2pq+q²= - CORRECT ANSWER -1
p= - CORRECT ANSWER - frequency of "A" alleles
q= - CORRECT ANSWER - frequency of "a" alleles
p²= - CORRECT ANSWER - frequency of AA genotype
2pq= - CORRECT ANSWER - frequency of Aa genotype
q²= - CORRECT ANSWER - frequency of aa genotype
, What happens when one of the conditions of Hardy Weinberg are not met? - CORRECT
ANSWER - evolution
In seed cracker finches from cameroon, small billed and large billed birds specialize in cracking
soft and hard seeds respectively. If long term climactic change resulted in all seeds becoming
hard, what type of selection would then operate in the finch population? - CORRECT
ANSWER - Directional selection; when conditions favor individuals with one extreme of a
phenotype (common with environment changes and migration)
Disruptive selection - CORRECT ANSWER - when conditions favor an individual with
both extremes of a phenotype over individuals with intermediate phenotypes
Stabilizing selection - CORRECT ANSWER - when conditions favor intermediate
phenotypes rather than extremes
Most consistent at causing populations to become better suited to their environment over the
course of generations. - CORRECT ANSWER - Natural selection
Diversity is understood to be a result of genetic variation. What is a recognized source for
evolution? - CORRECT ANSWER - Recombination by crossing over in mitosis
Biological species concept - CORRECT ANSWER - defines a species as a group of
populations that have the ability to interbreed and produce viable offspring
Morphological species concept - CORRECT ANSWER - defines a species based on body
shape and structural features
Phylogenetic species concept - CORRECT ANSWER - defines a species by the smallest
group of individuals that share a common ancestor
