Regeneration - development biology, Biology

Assignment Help:

Regeneration - Development Biology

Regeneration has, intrigued scientists for several generations and has resulting in voluminous literature on the subject beginning from the eighteenth century. T. H. Morgan 1901 has been primarily accountable for formulating the principles which form the basis of the recent studies of regeneration. The main problems of regeneration identified by Morgan are being investigated even to this day. These include the origin and developmental potential of cells that are accountable for the production of the regenerate, the role of the adjacent tissues in ascertaining the structure of the regenerated limb and the reasons for the enormous variation in the regenerative capabilities of various animals. What does regeneration mean in biological terms? Regeneration is a fascinating phenomenon. It includes continuity of the developmental processes or reawaking of the process of morphogenesis and differentiation in post-embryonic life in an already made and functional organism.

Regeneration takes place at various level of organization. At the sub-cellular and molecular level it is manifested in the continuous synthesis to replenish used up substances in the cells. At the sub-cellular and tissue levels it includes replacement of worn out cells, repair of damaged tissues and healing of wounds. At these levels the ability to again generate is a universal characteristic of all animals without which life of any individual would be impossible. At the organismic level regeneration contains de novo (afresh) development to restore the lost part of an organ or the reconstitution of the complete body from the residual pan of the organ concerned. This includes retracing many of the complex steps of the original ontogenetic development in a functional body within quite different physiological and environmental conditions. The capacity for this sort of regeneration is referred to as reparative or restitutive regeneration and is not evenly distributed in the animal kingdom. A few have great powers to restore lost parts, or even to form a whole body from a small piece. Others have variously restricted and limited abilities of such as regeneration, and still others have no power of reparative regeneration at all. The reasons for such type of inequality of regenerative power among animals are not clear.

In many groups, the animals show the phenomenon of autonomy, by which they themselves cast off or lose one or much more parts of the body when disturbed or threatened by an enemy or a predator. The autotomized (self-amputated) parts are consequently regenerated. Different animals employ varied method for the regeneration of lost parts. The study and investigation of the phenomena of regeneration are of great help in the efforts to understand the basic procedures and mechanisms of development as such.


Related Discussions:- Regeneration - development biology

Enzyme model, allosteric regulation project idea

allosteric regulation project idea

Female reproductive disorders-retained foetal membranes, Retained foetal me...

Retained foetal membranes The foetal membranes are normally expelled within 6to 12 hr after parturition in cows and buffaloes. If the foetal membranes are not voided even upto

Sporophytic incompatibility, Sporophytic Incompatibility The recogniti...

Sporophytic Incompatibility The recognition and rejection reactions in a SSI system occur on the stigma surface, placing barriers for pollen germination or penetration of poll

Explain balloon pulmonary valvuloplasty, Pulmonary stenosis is a relatively...

Pulmonary stenosis is a relatively common congenital heart defect. Usually these children with mild to moderate pulmonary stenosis survive into childhood. Since bicuspid pulmonary

Linkage of health with development, Linkage of Health With Development ...

Linkage of Health With Development Health, in its comprehensive or holistic sense, refers to the state of completephysical, mental, social and spiritual well being of a person.

Obelia, whyis it considered to showintermideate grade oforganisation

whyis it considered to showintermideate grade oforganisation

What is reproductive isolation, What is reproductive isolation? The Liv...

What is reproductive isolation? The Living beings are considered under reproductive isolation when they cannot cross among themselves or if they can cross but cannot generate f

B -pleated sheets protein structure, β - Pleated Sheets In this in...

β - Pleated Sheets In this inter molecular hydrogen bonds are present Two or more polypeptide chains come together and from a sheet. Condensation in little. However

Microbiology, harmful and benificial microbes

harmful and benificial microbes

Water-soluble vitamins for school children and adolescents, Determine Water...

Determine Water-soluble vitamins needs of school children and adolescents? The suggested requirements are given in Table 15.2 (ICMR 1990). Thiamine is computed as 0.5 mg/1000 K

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd