Download Advances in the Study of Behaviour: v. 10 by Jay S Rosenblatt PDF

By Jay S Rosenblatt

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In other words, the change that is occurring must refer to aspects of environmental order that (1) had previously been incorporated into the organization of members of a species, (2) in its altered form no longer matches the organization, and (3) in its altered form continues to affect the individual members of that species. This precludes from consideration any completely ‘new’ environmental events and confines consideration to relationships between order and organization that already have been established.

Potentially it allows the members of a population to respond to environmental change at the phenotypic level, without necessarily having to make any new adjustments at the genetic level. The genotype-phenotype dichotomy thus becomes a means by which members of a population can increase their adaptability ( V )at the phenotypic level at either very low or zero cost to their adaptedness ( S ) at the genetic level. It thereby goes a long way toward allowing a population to resolve the antagonism between the two components of fitness.

This phenotypic flexibility permits individual organisms an increased capacity either to avoid change or to track change, or both. It thereby increases the probability that an individual organism will contribute to the regenerate phase of the phylogenetic g-t-r heuristic, which, in turn, will increase the probability that the population to which the individual belongs will be successful. 111. IMPLICATIONS What remains is to show that the present approach has a potential for hypothesis testing and prediction.

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