It is called Punctuated Equilibrium. Some Evolutionary apologists, notably Richard Dawkins, have down played this aspect of Neo-Darwinistic theory.
punctuated equilibrium
According to the biological species concept, when the new species no longer can interbreed with the ancestral species, or with the population that it has been geographically isolated from long enough to have allele change significantly enough to prevent interbreeding.
Species survive, evolve, and create speciation by finding a niche. This means that they find an area where they are able to benefit from food, shelter, and protection from predators.
New species evolve from a previous existing species. As challenges arrive in the environment of the old species over many many generations body features are lost and/or gained. Eventually the old species will either eventually die out or change habitats. So basic evolution.
bye
punctuated equilibrium
punctuated equilibrium
Punctuated equilibrium theory proposes that species evolve rapidly during short periods of significant change, followed by long periods of stability with little evolutionary change. This contrasts with gradualism, which suggests that evolution occurs steadily over long periods of time.
Evolve.
Punctuated equilibria is a theory in evolutionary biology that suggests species undergo long periods of relative stability (stasis) punctuated by sudden and rapid evolutionary change. This theory contrasts with gradualism, which proposes that evolution occurs steadily over long periods of time.
Organisms can evolve into new species over long periods of time through the process of natural selection and adaptation to their environment. This can result in the development of new characteristics and the divergence of populations into separate species.
Punctuated equilibrium is the model of evolution in which periods of rapid change occur interspersed with long periods of stability. This theory suggests that species evolve quickly in short bursts of rapid change followed by extended periods of little or no change.
Evolve
evolution.
Species can change is there is a mass extinction or if the type of species changed the type of climate or terrain which would would make the species evolve to its new environment so that it can survive.
mew is a different species m8. it doesn't evolve
The gradualism model of evolution proposes that species evolve slowly and steadily over long periods of time, with small changes accumulating to result in significant transformations. This contrasts with the punctuated equilibrium model, which suggests that evolution occurs in short bursts of rapid change followed by long periods of stability.