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In biology, biological specificity is the tendency of a characteristic such as a behavior or a biochemical variation to occur in a particular species.

Biochemist Linus Pauling stated that "Biological specificity is the set of characteristics of living organisms or constituents of living organisms of being special or doing something special. Each animal or plant species is special. It differs in some way from all other species... biological specificity is the major problem about understanding life."[1]


Characteristics may further be described as being interspecific, intraspecific, and conspecific.


Interspecificity (literally between/among species), or being interspecific, describes issues between individuals of separate species. These may include:


Intraspecificity (literally within species), or being intraspecific, describes behaviors, biochemical variations and other issues within individuals of a single species. These may include:


Two or more individual organisms, populations, or taxa are conspecific if they belong to the same species.[2] Where different species can interbreed and their gametes compete, the conspecific gametes take precedence over heterospecific gametes. This is known as conspecific sperm precedence, or conspecific pollen precedence in plants.


The antonym of conspecificity is the term heterospecificity: two individuals are heterospecific if they are considered to belong to different biological species.[3]

Related concepts

Congeners are organisms within the same genus.[4]

See also


  1. ^ Linus Pauling, Barbara Marinacci, Linus Pauling in His Own Words: Selections From His Writings, Speeches and Interviews, (1995), p. 96.
  2. ^ "Conspecificity". Biology online. Retrieved 2009.
  3. ^ "Heterospecificity". Biology online. Retrieved 2009.
  4. ^ Congener, Accessed 2009-03-25

External links

  This article uses material from the Wikipedia page available here. It is released under the Creative Commons Attribution-Share-Alike License 3.0.



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