different between pleomorphism vs polymorphism

English

Etymology

pleo- (“full, many”) +? -morphism

Noun

pleomorphism (countable and uncountable, plural pleomorphisms)

1. (biology) the occurrence of multiple structural forms during the life cycle of an organism
2. (chemistry) Synonym of polymorphism

Related terms

• pleomorphic

Translations

• Italian: pleiomorfismo (it)

English

Etymology

From poly- +? -morphism.

Pronunciation

• (UK) IPA^(key): /p?l??m??f?z(?)m/
• (US) enPR: päl-?-môr?f?z-?m, IPA^(key): /p?li?m??f?z(?)m/

Noun

polymorphism (countable and uncountable, plural polymorphisms)

1. The ability to assume different forms or shapes.
2. (biology) The coexistence, in the same locality, of two or more distinct forms independent of sex, not connected by intermediate gradations, but produced from common parents.
3. (object-oriented programming) The feature pertaining to the dynamic treatment of data elements based on their type, allowing for an instance of a method to have several definitions.
4. (mathematics, type theory) The property of certain typed formal systems of allowing for the use of type variables and binders/quantifiers over those type variables; likewise, the property of certain expressions (within such typed formal systems) of making use of at least one such typed variable.
5. (crystallography) The ability of a solid material to exist in more than one form or crystal structure; pleomorphism.
6. (genetics) The regular existence of two or more different genotypes within a given species or population; also, variability of amino acid sequences within a gene's protein.
   • 1999, Matt Ridley, Genome, Harper Perennial 2004, p. 137:

     Since 1990 they have found an entirely new role: they promise understanding of how and why our genes are all so different. They hold the key to human polymorphism.

   • 2004, Richard Dawkins, The Ancestor's Tale, Phoenix 2005, p. 63:

     Some polymorphisms can be quite stable – so stable that they span the change from an ancestral to a descendant species.

Hyponyms

Related terms

Translations

See also

• RFLP
• riflip

References

• polymorphism on Wikipedia.Wikipedia