Polarity in regeneration, Biology

Polarity in Regeneration

A distinct polarity or gradient exists in planarians (and in other animals). The meaning of this is that in any piece or segment of the body; its anterior end (head end) represents one pole and the posterior end (tail end) represents another pole. Regeneration is generally correlated with this polarity. In any excised piece the cut surface towards the head end generates a new head and the cut surface towards the hind end produces a tail. In the remaining non-chordate phyla (that is Aschelminthes, Arthropoda and Molluscs) regeneration of missing parts is minimal, and asexual reproduction including regeneration is almost non-existent.

Posted Date: 2/5/2013 12:46:19 AM | Location : United States







Related Discussions:- Polarity in regeneration, Assignment Help, Ask Question on Polarity in regeneration, Get Answer, Expert's Help, Polarity in regeneration Discussions

Write discussion on Polarity in regeneration
Your posts are moderated
Related Questions
Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4

discus the protozoan flagellates of less medical importance ,outlining their development stages,normal habitants and morphological characteristics

The two gases making highest relative contribution to the greenhouse gases are: 1. CO2 and CH4 2. CH4 and N2O 3. CFC55 and N2O 4. CO2 and N2O CO2 and CH4


Q. What amount of catalyst is obsessive in the reaction it catalyzes? Catalysts are not obsessive in the reactions they catalyze.

What is karyotype? The name karyotype is given to the set of chromosomes of an individual, generally when visualized and identified under the microscope. The visualization usua

What modern technology used for the integumentary system?

Mr. Smith is a 72 year male diagnosed with hypertension.  Along with hypertension, Mr. Smith has been diagnosed with right-sided heart failure.  The following are his list of medic

What are the Technique of Operation Cardiovascular Surgery? Technique of Operation Cardiovascular Surgery :  The operation is done on cardiopulmonary bypass with profound h

What is the ranges of tolerance and performance optima? Ranges of Tolerance and Performance Optima :   When it comes to physical factors or resources, most species are able to