Concept called gradualism. Not hypothesis, as it has been tested and confirmed, especially among the " little shellies. "
Others have said twice: it is called Punctuated Equilibrium.
That theory is called punctuated equilibrium.
natural selection
The hypothesis that proposes evolution occurs slowly but steadily is known as gradualism. It suggests that species evolve through gradual changes over long periods of time. This contrasts with punctuated equilibrium, which suggests that evolution occurs in short bursts of rapid change followed by long periods of stability.
punctuated equilibrium
Darwin's classic theory of evolution assumed that evolution is a slow, contunuous process, by which new species evolve and emerge. This is referred to at times as "organic evolution" and the "synthetic theory of evolution", or just the Darwinian theory of evolution. A newer theory, proposed originally by Niles Eldridge and Stephen Jay Gould is known as "punctuated equilibria", a model in which the evloution of new species occurs only periodically, in relatively rapid spurts. See "Time Frames the Rethinking of Darwinian Evolution and the Theory of Punctuated Equilibraia, Simon & Schuster, 1985"AnswerThe slow, constant process has also been called "gradualism."
genetic drift
The smallest unit in which evolution occurs is a population.
It's called 'centripetal acceleration', whether or not the speed is constant or the path circular.
Evolution that occurs over a short period of time is called microevolution. This involves changes in the gene pool of a population from one generation to the next, leading to small-scale adaptations within a species.
The theory that evolution occurs during short periods of rapid change is punctuated equilibrium. This theory suggests that most species remain relatively unchanged for long periods, with bursts of significant change happening over short periods of time. This contrasts with the gradualism theory, which proposes that evolution occurs at a slow and constant rate.
It's called 'centripetal acceleration', whether or not the speed is constant or the path circular.