Then, even if circumstances change such that it no longer provides any survival or reproductive advantage, the behavior will still tend to be exhibited -- unless it becomes positively disadvantageous in the new environment.
adaptive radiation: The diversification, over evolutionary time, of a species or group of species into several different species or subspecies that are typically adapted to different ecological niches (for example, Darwin's finches).
In 1843 he entered an Augustinian monastery in Brunn, Czechoslovakia.
Soon afterward, his natural interest in science and specifically hereditary science led him to start experiments with the pea plant.
The skulls on the 2nd row are fossils that (almost) all creationists consider apes, while the ones on the bottom row are (almost) all considered to be humans.
He took it and planted it next to the typical variety.
(For ease of comparison, some skulls are reflected so that they all face in the same direction.) The following table summarizes the diversity of creationist opinions about some of the more prominent items in the human fossil record.
As this table shows, although creationists are adamant that none of these are transitional and all are either apes or humans, they are not able to agree on which are which.
In fact, there are a number of creationists who have changed their opinion on some fossils.
They do not even appear to be converging towards a consistent opinion.
Interestingly, widely differing views are held by two of the most prominent creationist researchers on human origins, Gish and Lubenow.