Share this entry

Share this page

preadaptation

Line breaks: pre|adap¦ta¦tion
Pronunciation: /ˌpriːadəpˈteɪʃ(ə)n/

Definition of preadaptation in English:

noun

Biology
1An adaptation which serves a different purpose from the one for which it evolved.
Example sentences
  • The authors speculate that the fusion of polar bodies in the RKK might be a preadaptation to automictic parthenogenesis through central fusion.
  • He suggested that avian ancestors must have incorporated functional preadaptations for flight, yet rejects characters uniting theropods and birds based on grounds of functional similarity.
  • He then lists a number of likely cognitive, social and physiological preadaptations that would need to be in place that would enable, but not squeeze out, language.
1.1 [mass noun] The process by which a preadaptation arises.
Example sentences
  • Such a practice may have allowed preadaptation of the starting clone to the 25° environment.
  • He goes on to legitimise the notion of preadaptation, and how these might accumulate until the last piece in the mosaic could be put in place and circumstances become such that an evolutionary shift is made possible.
  • The model could be extended to cover factors such as the level of preadaptation by studying their effect on the parameter.

Derivatives

preadapt

1
verb
Example sentences
  • Future research should focus on such traits of cowbird relatives and on how these traits preadapted a particular lineage to become parasites.
  • Such genes would, therefore, appear to be preadapted to regulate the expression of the related gene through an antisense mechanism; this is a function that is entirely unlike that of the original gene.
  • Because all the known theropods were terrestrial predators, he suggested that the flight feathers must have elongated in the context of insect traps and were later preadapted for flight.

Definition of preadaptation in:

Share this entry

Share this page

 

What do you find interesting about this word or phrase?

Comments that don't adhere to our Community Guidelines may be moderated or removed.

Get more from Oxford Dictionaries

Subscribe to remove ads and access premium resources

Word of the day terpsichorean
Pronunciation: ˌtərpsikəˈrēən
adjective
of or relating to dancing