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A type of adaptive signaling, mimicry evolves when a signal-receiver, known as the dupe, perceives the similarity between the mimic and the object or organism it is mimicking, known as the model, and as a result changes its behavior in a way that provides a selective advantage to the mimic; the model may also benefit from the shared resemblance ...
Devolution, de-evolution, or backward evolution (not to be confused with dysgenics) is the notion that species can revert to supposedly more primitive forms over time. The concept relates to the idea that evolution has a divine purpose and is thus progressive (orthogenesis), for example that feet might be better than hooves, or lungs than gills.
Evolution is the change in the heritable characteristics of biological populations over successive generations. [1] [2] It occurs when evolutionary processes such as natural selection and genetic drift act on genetic variation, resulting in certain characteristics becoming more or less common within a population over successive generations. [3]
Exaptation or co-option is a shift in the function of a trait during evolution.For example, a trait can evolve because it served one particular function, but subsequently it may come to serve another.
Darwin's finches. Evolutionary biology is the subfield of biology that studies the evolutionary processes such as natural selection, common descent, and speciation that produced the diversity of life on Earth.
Neoteny (/ n i ˈ ɒ t ən i /), [1] [2] [3] [4] also called juvenilization, [5] is the delaying or slowing of the physiological, or somatic, development of an ...
Cave paintings (such as this one from France) represent a benchmark in the evolutionary history of human cognition. Victorian naturalist Charles Darwin was the first to propose the out-of-Africa hypothesis for the peopling of the world, [40] but the story of prehistoric human migration is now understood to be much more complex thanks to twenty-first-century advances in genomic sequencing.
Carcinisation (American English: carcinization) is a form of convergent evolution in which non-crab crustaceans evolve a crab-like body plan. The term was introduced into evolutionary biology by Lancelot Alexander Borradaile , who described it as "the many attempts of Nature to evolve a crab".