Heteromorphosis (//, //) ( – other; morphe – form) refers to situations where an organ or tissue is different from the expected,"Biology Encyclopedic Dictionary. "Ch. Ed. MS Gilyarov; Editorial Board: AA Babayev, GG Winberg, GA Zavarzin and others. – 2nd ed., Corrected. – M.: Sov. Encyclopedia of 1986. either because of (embryonic) development anomalies, or after reparative regeneration following a trauma.Yew. A. Filipchenko – Experimental Zoology; Ripol Klassik 2013; , , pp. 209, 221–223, 344 The difference include an abnormal location, or an abnormal shape.

Brockhaus and Efron Encyclopedic Dictionary The ''Brockhaus and Efron Encyclopaedic Dictionary'' (35 volumes, small; 86 volumes, large) is a comprehensive multi-volume encyclopaedia in Russian. It contains 121,240 articles, 7,800 images, and 235 maps. It was published in the Russian Em ...

It should not be confused with

homeosis In evolutionary developmental biology, homeosis is the transformation of one organ into another, arising from mutation in or misexpression of certain developmentally critical genes, specifically homeotic genes. In animals, these developmental gen ...

, which means big change in tissue structure of an organ. Heteromorphosis is an example of the imperfection of some manifestations of the regenerative capacity.

Jacques Loeb Jacques Loeb (; ; April 7, 1859 – February 11, 1924) was a German-born American physiologist and biologist. Biography Jacques Loeb, born Itzak, firstborn son of a Jewish family from the German Eifel region, was educated at the universities of ...

offered this term in 1892, then he was in experiments of distortion of polarity of

hydroids Hydroids are a life stage for most animals of the class Hydrozoa, small predators related to jellyfish. Some hydroids such as the freshwater '' Hydra'' are solitary, with the polyp attached directly to the substrate. When these produce buds, ...

. Many organisms from protozoans to the chordate may have heteromorphosis examples, but it is easier to find in lower forms of animals: *

Earthworm An earthworm is a soil-dwelling terrestrial invertebrate that belongs to the phylum Annelida. The term is the common name for the largest members of the class (or subclass, depending on the author) Oligochaeta. In classical systems, they we ...

: distortion of polarity: replacement of removed tail with head end * Actinia: development of a cut into a second mouth *

Decapods The Decapoda or decapods, from Ancient Greek δεκάς (''dekás''), meaning "ten", and πούς (''poús''), meaning "foot", is a large order (biology), order of crustaceans within the class Malacostraca, and includes crabs, lobsters, crayfis ...

: the replacement of removed eyes with antennae

References

{{Reflist Developmental biology

See also

References