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bioloy vocab 16

QuestionAnswer
the study of the frequency and interaction of alleles and genes in populations population genetics
a change in the collective genetic material of a population microevolution
on a graph of the frequency of some variable, a curve that first rises and then falls and thus forms a symmetric bell-shaped curve bell curve
all of the genes of the reprodutively active members of a population gene pool
the proportion of a gene copies in a population that are a given allele, expressed as a percentage allele frequency
the ratio of individuals with a particular phenotype to the total number of individuals in a population phenotype frequency
based on a set of assumptions about an ideal hypothetical populations that is not evolving Hardy-Weinburg genetic equilibrium
the movement of an individual or group into an area immigration
the movement of an individual or group out of an area emigration
the movement of genes into or out of a population due to interbreeding gene flow
the random change in allele frequency in a population genetic drift
an evolutionary mechanism by which traits that increase the ability of individuals to attract or acquire mates appear with increasing frequency in a population; selection in which a mate is chosen on the basis of a particular trait or traits sexual selection
a type of natural selection in which the average form of a trait is favored and becomes more common stabilizing selection
a type of natural selection in which two extreme forms of a trait are selected disruptive selection
a type of natural selection in which the most extreme form of a trait is favored and becomes more common directional selection
the formation of new species as a result of evolution speciation
a model of evolution in which gradual change over a long period of time leads to biological diversity gradulism
a model of evolution in which short periods of drastic change in species, including mass extinctions and rapid speciation, are seperated by long periods of little or no change punctuated equilibrium
Created by: stephensfamily
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