changes occuring within a species.
Small genetic changes a population undergoes. Compare macroevolution.
(MIC·ro EV·o·LU·tion). Short-term evolutionary change focusing on changes in allele frequencies in a population over successive generations, consists of the study of evolution in terms of the phenomena bringing about genetic variation in populations including mutation, natural selection, gene flow, and genetic drift. Microevolution involves short-term evolutionary change and the phenomena which bring it about.
evolutionary change involving the gradual accumulation of mutation leading to new variation within a species
evolution below the species level.
evolution resulting from small specific genetic changes that can lead to a new subspecies
Smaller changes in evolution, such as a change in a populations gene pool over a succession of generations.
A term referring to evolutionary changes beneath the level of the species. It includes, but is not limited to, adaptation to local environments. See also macroevolution.
small scale genetic changes in organisms through mutations resulting in slight changes in an organism.
Mutations in a gene that lead to changes in the characteristics of a population.
Evolutionary changes on the small scale, such as changes in gene frequencies within a population.
A change in the gene pool of a population over a succession of generations. microfilament A solid rod of actin protein in the cytoplasm of almost all eukaryotic cells, making up part of the cytoskeleton and acting alone or with myosin to cause cell contraction. micronutrient[Gk. mikros, small + L. nutrire, to nourish] An inorganic nutrient required in only minute amounts for plant growth, such as iron, chlorine, copper, manganese, zinc, molybdenum, and boron.
Evolutionary changes that occur within species. These occur over a range of time scales, from months to millions of years.
Change within species; relatively minor change in the composition of a species' gene pool with time.
A small-scale evolutionary event such as the formation of a species from a preexisting one or the divergence of reproductively isolated populations into new species.
Change within a lineage (sometimes called adaption). This is observed, and there is no debate over it.
Evolution on a small or limited scale (change within species).
Microevolution is the occurrence of small-scale changes in allele frequencies in a population, over a few generations, also known as change at or below the species level.
