Evans explores (i) possible cognitive preadaptations
for the development of semantic knowledge, and (ii) the range and nature of conceptual structure as encoded in language.
Longitudinal data (not available for the case studies presented above) are needed to identify both preadaptations
By the mid-Cenozoic, ancestral truncatellids had preadaptations
allowing them to colonize land in appropriate tectonic and ecological settings.
Evolution of sexual mimicry in the Orchidinae: The role of preadaptations
in the attraction of male bees as pollinators.
Processus de socialization et preadaptations
comportementales chez les araignees.
If this pattern of origin is common, where evolution of active pollination builds largely on preadaptations
and few novel traits, it would follow that interactions where selection for increased pollination effectiveness is probable may be far less common than if extensive coadaptation at the trait level might precede it.
This observation supports the hypothesis that selective pressures, preadaptations
, and constraints vary at high taxonomic levels (Blackburn 1985).
With these preadaptations
to land life, the tide pool microbes could have spawned the first colonizers of the continents, Campbell speculates.
remnants of preadaptations
from the nonflooded terra firme species in