We identify this class of phenomena as loss of functional motivation.
I do agree that these mechanisms (and other similar ones, e.g. stress-induced mutagenesis) can be legitimately described as exploratory response and do represent a distinct evolutionary modality (in Ref. 59, Yuri Wolf and I defined this class of phenomena as quasi-Lamarckian).
Banzett et al. (1992) concluded that coordination of breathing and stride in humans belongs to this class of coupling phenomena and has no obvious mechanical advantage.
The afterimage is the most readily observed of the class of phenomena known as aftersensations, or aftereffects.
Indeed, the "class of phenomena" pertinent to a scientific theory is its "intended scope" (Suppe 1977, 223; Weisberg 2013, 40).
On the other hand, Whewell explained, when phlogiston theory, which colligated facts about the class of phenomena "chemical combination," was extended to colligate the class of phenomena "weight of bodies," it was unable to do so without an ad hoc and implausible modification (namely, the assumption that phlogiston has "negative weight") (see 1858b, 92 3).
In Friedman's view, "theory is to be judged by its predictive power for the class of phenomena which it is intended to explain" (1953, p. 8 [italics added]).
But does intelligence lie within the class of phenomena too complex and historically conditioned for repetition?
This requires the development of a strong set of criteria specifying what conditions would trigger a change of mode, or what class of phenomenon would require an interruption of "normal" observations, or a significant re-distribution of resources, in order to make detailed observations of its development.
In our study we also detected changes in stress-responsive genes using the common variance model (although the overrepresentation was not statistically significant), indicating that up regulation of this class of gene may be a general phenomenon in newly resynthesized allopolyploids.
It also sheds light on the mechanism of localization phenomena for this class of repetitive systems.
