This quiz, titled 'Chapter 20 Genes With Populations', explores key concepts in population genetics, such as natural selection, adaptations, gene pools, the founder principle, and the bottleneck effect. It assesses understanding of how genetic factors influence species evolution and individual fitness within populations.
Founder effect.
Hardy-Weinberg effect.
Bottleneck effect.
Polymorphic effect.
Adaptive effect.
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An allele mixture.
A gene pool.
A genetic melting pot.
A genome.
Variant genes.
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P^2
Q^2
2pq
(p+q)^2
2Aa
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All of the fitness within a population.
All of the individuals within a population
All of the mutations within a population.
All of the adaptations within a population.
All of the alleles of genes within a population.
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Natural selection.
Creation of new species.
Genetic drift.
Outcrossing.
Increasing evolutionary resistance.
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When immigration in and out of the area are held constant.
When changes only take place over long periods of time.
When it includes episodes of extinction.
When the population is designed to survive in new habitats.
When all of the Hardy-Weinberg assumptions are met.
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Variation.
Microevolution
Macroevolution.
Fitness.
Adaptive makeup.
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Favoring heritable features that make the organism better suited to survive and reproduce.
Producing a constant number of offspring while in that environment.
Surviving for a fixed amount of time.
Resisting the environment and keeping the environment from changing
Favoring those individuals with the most favorable acquired characteristics.
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Mutation.
Migration.
Genetic drift.
Assortative mating.
Bottleneck effect.
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Populations.
Clines.
Bottleneck areas.
Migratory areas.
Genomes.
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A population goes extinct.
The most extreme outliers of a population are eliminated (e.g., the largest beaks and smallest beaks are eliminated).
The population is strongly selected for in one direction (e.g., larger beak size).
The population is strongly selected for in two directions (e.g., larger beak size and smaller beak size).
A population increases its variation (e.g., a wide selection of all beak sizes).
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(p + q) 2 .
P and q
P 2 and q 2
2pq
1 - p and 1 - q.
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Darwin
Lamarck.
Wallace.
Founder.
Hardy-Weinberg.
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Dominant.
Polynomial.
Polymorphic.
Heterozygous
Somatic.
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Neutral theory
Disassortative mating.
Shifting balance theory
Bottleneck effect.
Founder effect.
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Mutation
Migration
Genetic drift
Non-random mating
Artificial selection
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Founder effect.
Gene flow
Genetic drift.
Mutation.
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Little natural selection occurs in this species.
The body is long, thin, and graceful.
There is very little genetic variability
These cats are members of an endangered species.
They originally came from small areas of Africa.
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Founder effect.
Genetic bottleneck.
Point mutation
Heterozygote advantage.
Heterozygosity.
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Mutation.
Migration.
Genetic drift.
Assortative mating
Selection.
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Slight; a bottleneck effect
Slight; the founder effect
Great; disruptive selection
Great; a bottleneck effect
Great; assortive mating
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Genes.
Fitness.
Mutations.
Adaptations.
Selection.
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(p+q) 2 (p+q)^2
2pq.
Q^2
P^2
2Aa.
A population goes extinct.
The most extreme outliers of a population are eliminated (e.g., the largest beaks and smallest beaks are eliminated).
The population is strongly selected for in one direction (e.g., larger beak size).
The population is strongly selected for in two directions (e.g., larger beak size and smaller beak size).
A population increases its variation (e.g., a wide selection of all beak sizes).
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The maintenance of genetic variation in the population.
Elimination of rarer genotypes because of uneven selection.
An increase in point mutations.
High population increase to maintain phenotypic variation.
Extinction of the population.
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Mating with certain trait-containing individuals.
Mating with dominant phenotypes.
Hybridization between individuals of adjacent populations.
Removing the barriers between the populations.
Physical movement of genes within an individual by transposons.
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Fewer homozygotes.
Less natural selection
More heterozygotes
More homozygotes.
More mutations.
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Genetic outflow.
Large population size.
Selection.
Inheritance of acquired characteristics.
Random mating.
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Mutation
Gene flow
Random mating
Genetic drift
Selection
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Polymorphic alleles.
Assortive mating.
Natural selection.
Maintenance of recessive alleles in the gene pool.
No evolutionary changes.
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Mutation.
Migration.
Genetic drift.
Nonrandom mating.
Selection.
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Natural selection.
Stabilizing selection.
Disruptive selection
Directional selection.
Artificial selection.
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Mutation
Natural selection
Migration
Assortive mating
Gene flow
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Wind-blown pollen
Gametes dispersed by ocean currents
Zygotes dispersed by ocean currents
Disassortive mating within a population
Hybridization between neighboring populations
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Artificial selection
Directional selection
Disrupting selection.
Hardy-Weinberg principle.
Founder principle.
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Low rates of mutation.
Many polymorphic alleles
Little variation in physiology and behavior
Hardy-Weinberg equilibrium.
Random mating.
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Elimination of a rare genotype.
Even distribution of genotype frequencies.
Increase in a rare genotype.
Increase in variation within the population.
Increase in a rare genotype and an increase in variation within the population.
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Pike cichlids are only found below waterfalls.
Guppies transferred to pools above waterfalls remained drab if killifish were present there.
Guppy predation was greater in pools below waterfalls than above waterfalls.
Killifish can be found both above and below waterfalls.
Substantial evolutionary changes in guppy populations can occur in as few as several years.
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Change only the expected Hardy-Weinberg allele frequencies in a population
Change only the expected Hardy-Weinberg genotype frequencies in a population.
Change both the expected Hardy-Weinberg allele and genotype frequencies in a population
Are kinds of selection pressure.
Are examples of random mating
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