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KU BIOL 152 Exam 1 Questions And
Answers 100% Pass
What must be present before natural selection can act upon a population? - ANS 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? - ANS 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? - ANS Genetic drift
p+q= - ANS 1
p²+2pq+q²= - ANS 1
p= - ANS frequency of "A" alleles
q= - ANS frequency of "a" alleles
p²= - ANS frequency of AA genotype
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2pq= - ANS frequency of Aa genotype
q²= - ANS frequency of aa genotype
What happens when one of the conditions of Hardy Weinberg are not met? - ANS 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? - ANS Directional
selection; when conditions favor individuals with one extreme of a phenotype (common with
environment changes and migration)
Disruptive selection - ANS when conditions favor an individual with both extremes of a
phenotype over individuals with intermediate phenotypes
Stabilizing selection - ANS 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. - ANS Natural selection
Diversity is understood to be a result of genetic variation. What is a recognized source for
evolution? - ANS Recombination by crossing over in mitosis
Biological species concept - ANS defines a species as a group of populations that have the
ability to interbreed and produce viable offspring
Morphological species concept - ANS defines a species based on body shape and structural
features
KU BIOL 152 Exam 1 Questions And
Answers 100% Pass
What must be present before natural selection can act upon a population? - ANS 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? - ANS 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? - ANS Genetic drift
p+q= - ANS 1
p²+2pq+q²= - ANS 1
p= - ANS frequency of "A" alleles
q= - ANS frequency of "a" alleles
p²= - ANS frequency of AA genotype
, ©EVERLY 2025 ALL RIGHTS RESERVED
2pq= - ANS frequency of Aa genotype
q²= - ANS frequency of aa genotype
What happens when one of the conditions of Hardy Weinberg are not met? - ANS 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? - ANS Directional
selection; when conditions favor individuals with one extreme of a phenotype (common with
environment changes and migration)
Disruptive selection - ANS when conditions favor an individual with both extremes of a
phenotype over individuals with intermediate phenotypes
Stabilizing selection - ANS 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. - ANS Natural selection
Diversity is understood to be a result of genetic variation. What is a recognized source for
evolution? - ANS Recombination by crossing over in mitosis
Biological species concept - ANS defines a species as a group of populations that have the
ability to interbreed and produce viable offspring
Morphological species concept - ANS defines a species based on body shape and structural
features
