Natural Selection Review

known for compiling the theory of population evolution by means of natural selection after decades of research and investigation

• Charles Darwin

• Jean Baptiste Lamarck

• Alfred Wallace

• Gregor Mendel

occurs when a small number of individuals from a much larger population establish a new population with greatly reduced genetic variation

• bottleneck effect

• founder's effect

• gene flow

• allele frequency

coauthored a paper on natural selection as a means for evolution, but did not have the volumes of research or experimentation compared with the other author

• Charles Darwin

• Jean Baptiste Lamarck

• Alfred Wallace

• Gregor Mendel

all of the alleles present for each gene within a population of interbreeding species

• gene flow

• gene pool

• genetic drift

• allele frequency

elimination of a species from Earth

• evolution

• emigration

• extinction

• immigration

occurs when an event reduces a population's size to a small number of reproducing individuals, thereby greatly reducing genetic variability

• bottleneck effect

• founder's effect

• gene flow

• gene pool

occurs when changes in allele frequencies occur simply by random chance; can greatly affect small populations and cause some alleles to be lost within a population

• gene pool

• gene flow

• genetic drift

• natural selection

the process of biological change through change in allele frequency over time by which descendants come to differ from their ancestors

• emigration

• evolution

• gene flow

• immigration

movement of individuals into a population, thereby adding alleles to the gene pool

• emigration

• evolution

• gene flow

• immigration

principle that states a population's allele frequencies remain constant from generation to generation if mating is random and if mutation, selection, immigration, and emigration do not occur

• allele frequency

• artificial selection

• natural selection

• Hardy-Weinberg equilibrium