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).
She is the editor of the Journal of the Royal Astronomical Society of Canada and the author of several books.
However, they cautioned against drawing any conclusions about the dinosaur’s intelligence.
Peaks on the landscape correspond to genotypic frequencies at which the average fitness is high, valleys to genotypic frequencies at which the average fitness is low. adaptive logic: A behavior has adaptive logic if it tends to increase the number of offspring that an individual contributes to the next and following generations.
If such a behavior is even partly genetically determined, it will tend to become widespread in the population.
Researchers from the Massachusetts Eye and Ear, the Harvard-wide Program on Antibiotic Resistance and the Broad Institute at MIT released a study on Thursday tracing the evolution of enterococci, a common bacteria.
As life forms emerged from the oceans and transitioned from marine animals to land animals, they brought along microbes that adapted to different extreme environments such as cold and starvation, the researchers say.