when one of the hands of starfish is cut it each piece is developed into a new one,but when the tail of a lizard is cut then y the portion of the cut offed tail which becomes seperated cannot develope into new lizard??
Answers
Answer:
Because its DNA is not same as starfish
Answer:
The ability to regenerate damaged or lost tissues has remained the lofty goal of regenerative medicine. Unfortunately, humans, like most mammals, suffer from very minimal natural regenerative capabilities. Certain non-mammalian animal species, however, are not so limited in their healing capabilities, and several have attracted the attention of researchers hoping to recreate enhanced healing responses in humans. This review focuses on one such animal group with remarkable regenerative abilities, the lizards. As the closest relatives of mammals that exhibit enhanced regenerative abilities as adults, lizards potentially represent the most relevant model for direct comparison and subsequent improvement of mammalian healing. Lizards are able to regenerate amputated tails, and exhibit adaptations that both limit tissue damage in response to injury and initiate coordinated regenerative responses. This review summarizes the salient aspects of lizard tail regeneration as they relate to the overall regenerative process, and also presents the relevant information pertaining to regrowth of specific tissues, including skeletal, muscular, nervous, and vascular tissues. The goal of this review is to introduce the topic of lizard tail regeneration to new audiences with the hope of expanding the knowledge base of this under-utilized but potentially powerful model organism.
Explanation:
The quest to improve human wound healing has benefited from the use of a variety of mammalian animal models in all areas of research, from elucidating the mechanisms of healing processes to testing therapies. However, comparatively little work has been extended to non-mammalian animals, some of which exhibit the most amazing wound healing abilities among vertebrate animals. The goal of this review is to introduce these organisms and their regenerative capabilities to an audience who otherwise might not consider these non-traditional, but potentially instructive, animals for research aimed at augmenting mammalian regeneration.