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Evolution and Adaptation template



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QuestionsAnswers
Analogous structureStructures that do not have a common evolutionary origin but are similar in function.
Artificial selectionProcess of breeding organisms with specific traits in order to produce offspring with those same traits.
CamouflageStructural adaptation that enables a species to blend with their surroundings
Homologous structureStructures with common evolutionary origins; can be similar in arrangement, function or both.
MimicryStructural adaptation evolved in some species where one species resembles another.
Natural selectionMechanism for change in populations; occurs when organisms survive, reproduce and pass their traits on.
Vestigial structureStructures that has no function in a present-day organism but was probably useful to an ancestor.
Allelic frequencyPercentage of any allele in a population's gene pool.
Directional selectionNatural selection that favors individual with one extreme of a trait.
Disruptive selectionNatural selection that favors both extreme variations of a trait.
Gene poolAll of the alleles in a populations genes.
Genetic driftAlteration of allelic frequencies in a population by chance events.
Genetic equilibriumCondition in which the frequency of alleles in a population remains the same over generations.
VariationDifferences with in a species that is provided by mutations and sexual reproduction.
SpeciationA process of evolution of new species that occurs when members of similar populations no longer interbreed to produce fertile offspring.
Stabilizing selectionNatural selection that favors the average individuals in a population.
AdaptationInherited features that make a species more suited to survive and reproduce in its environment.
Adaptive radiationDivergent evolution in which ancestral species evolve into an array of species to fit a number of diverse habitats.
EvolutionThe gradual accumulation of adaptations over time.
Over productionMore offspring are born than can survive to reproduce.



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