"Doesn't that suggest that there's an adaptive value in being either a good ectotherm or a good endotherm, but not in the middle?" Prof Seymour has argued since the 1970s that dinosaurs were warm-blooded.
where the threshold r is an adaptive value defined as the sum between the average of the color distances associated to edges and the standard deviation, r = μ + σ.
The ability to eliminate defective cells that would otherwise drain limited resources may be a substantial adaptive value to a clonal population such as a biofilm community.
While neither these behaviours are unanimously attributed to an adaptive value, music and entrainment in various guises has been suggested to be related to group cohesion [22], the evolution of language [23], hominid speciation by means of natural selection [24], and costly signalling of mate quality in the context of sexual selection [25].
Many of them appear to be the result of negative selection and thus are likely to provide an adaptive value.
This is in agreement with an adaptive value of remodelling, since the hard food diet is more mechanically resistant, and therefore requires higher relative bite forces to break down and process, which in turn should generate greater stresses (force per unit area) in the jaw.
Cultural explanation: Plenty of behavioral tendencies that are socially learned have an adaptive value (i.e., bearing a fitness advantage in the local environment), but others are merely socially reinforced.
From an evolutionary perspective, internode elongation is considered as having an adaptive value since its variation in response to environmental changes provides a fitness benefit to the species (van Kleunen and Fischer, 2004; Thomas and Hay, 2008).
Among the 130 codons, 27 are translated into class-specific residues, which are therefore predicted to provide an adaptive value (Additional file 1).
A word like cow, for example, refers to animals of a certain kind if the beliefs, inferences, and expectations that the word is used to express have an adaptive value for human beings in their dealings with those very animals.
