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Sunflower sea star regenerates its arms. Dwarf yellow-headed gecko with regenerating tail. Regeneration in biology is the process of renewal, restoration, and tissue growth that makes genomes, cells, organisms, and ecosystems resilient to natural fluctuations or events that cause disturbance or damage. [1]
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
All cnidarians can regenerate, allowing them to recover from injury and to reproduce asexually. Hydras are simple, freshwater animals possessing radial symmetry and contain post-mitotic cells (cells that will never divide again) only in the extremities. [14] All hydra cells continually divide. [15]
The regeneration of lost parts involves both epimorphosis and morphallaxis. In epimorphosis stem cells—either from a reserve pool or those produced by dedifferentiation—form a blastema and generate new tissues. Morphallactic regeneration involves the movement and remodelling of existing tissues to replace lost parts. [52]
Alligators can regrow their tails, it turns out. Researchers have discovered that these ancient reptiles that date back to dinosaur days and can grow 14 feet long or more can regenerate themselves ...
Makara (Hindu mythology) – half terrestrial animal in the frontal part (stag, deer, or elephant) and half aquatic animal in the hind part (usually of a fish, a seal, or a snake, though sometimes a peacock or even a floral tail is depicted) Mug-wamp - (Canadian) giant sturgeon monster said to inhabit Lake Temiskaming in Ontario. Name is of ...
The four types of regeneration are epimorphosis, stem cell mediated regeneration, morphallaxis, and compensatory regeneration (compensatory hyperplasia). Epimorphosis occurs when other adult cells in a damaged tissue undergo dedifferentiation and then divide to form an undifferentiated mass of tissue, this new mass encompasses the mass of ...
Regeneration, many different unrelated species can grow new limbs, tail or other body parts, if body parts are lost. [ 202 ] [ 203 ] The statocyst is a balance sensory receptor independently found in different organisms like: some aquatic invertebrates , including bivalves , [ 204 ] cnidarians , [ 205 ] echinoderms , [ 206 ] cephalopods , [ 207 ...