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Evolution of Populations

Horizontales
process by which one species evolves and gives rise to many descendant species that occupy different ecological niches (2 words)
proportion of one allele, compared with all the alleles for that trait, in the gene pool (2 words)
isolation between populations due to differences in courtship or mating behavior
theory that states that speciation occurs suddenly and rapidly followed by long periods of little evolutionary change (2 words)
pathway of natural selection in which one uncommon phenotype is selected over a more common phenotype
pathway of natural selection in which intermediate phenotypes are selected over phenotypes at both extremes
pathway of natural selection in which two opposite, but equally uncommon, phenotypes are selected over the most common phenotype
genetic drift that results from an event that drastically reduces the size of a population (2 words)
Verticales
collection of alleles found in all of the individuals of a population (2 words)
final stage in speciation, in which members of isolated populations are either no longer able to mate or no longer able to produce viable offspring (2 words)
physical movement of alleles from one population to another (2 words)
isolation between populations due to barriers related to time, such as differences in mating periods or differences in the time of day that individuals are most active
process in which two or more species evolve in response to changes in each other
isolation between populations due to physical barriers
change in allele frequencies due to chance alone, occurring most commonly in small populations (2 words)
selection in which certain traits enhance mating success (2 words)
evolution of one or more closely related species into different species; resulting from adaptations to different environmental conditions
elimination of a species from Earth
evolution toward similar characteristics in unrelated species, resulting from adaptations to similar environmental conditions