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Recent work has confirmed that neoblasts are totipotent since one single neoblast can regenerate an entire irradiated animal that has been rendered incapable of regeneration. [49] In order to prevent starvation a planarian will use their own cells for energy, this phenomenon is known as de-growth.
Autotomy (from the Greek auto-, "self-" and tome, "severing", αὐτοτομία) or 'self-amputation', is the behaviour whereby an animal sheds or discards an appendage, [1] usually as a self-defense mechanism to elude a predator's grasp or to distract the predator and thereby allow escape. Some animals are able to regenerate the
Over 1.5 million living animal species have been described—of which around 1 million are insects—but it has been estimated there are over 7 million in total. Animals range in size from 8.5 millionths of a metre to 33.6 metres (110 ft) long and have complex interactions with each other and their environments, forming intricate food webs .
Pages in category "Lists of animals by conservation status" The following 61 pages are in this category, out of 61 total. This list may not reflect recent changes .
Print/export Download as PDF; Printable version; ... Pages in category "Lists of animals of the United States" The following 8 pages are in this category, out of 8 ...
Stentor coeruleus, used in molecular biology (its genome has been sequenced), [5] and is studied as a model of single-cell regeneration. Dictyostelium discoideum, used in molecular biology and genetics (its genome has been sequenced), and is studied as an example of cell communication, differentiation, and programmed cell death.
Pampa, a Jersey calf, was the first animal cloned in Argentina (by the company Bio Sidus) in 2002. [ 25 ] An Anatolian Grey bull (Efe) was cloned in Turkey in 2009 and four female calves from the same breed (Ece, Ecem, Nilüfer, Kiraz) in 2010 by the Scientific and Technological Research Council of Turkey (TÜBİTAK).
Rodents are animals that gnaw with two continuously growing incisors. Forty percent of mammal species are rodents, and they inhabit every continent except Antarctica. This list contains circa 2,700 species in 518 genera in the order Rodentia. [1]