Polarity in regeneration, Biology

Assignment Help:

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.


Related Discussions:- Polarity in regeneration

Gluconeogenesis, Gluconeogenesis:   When  diet is deficient  incarbohydrate...

Gluconeogenesis:   When  diet is deficient  incarbohydrates. Glucose  or glycogen is formed from noncarbohydrate compounds principally from certain amino acids  and the glycerol of

Protein digestion, Protein Digestion Enzymes that digest proteins are ...

Protein Digestion Enzymes that digest proteins are divided into two groups endopeptidases and exopeptidases according to site of their action in the protein molecule. Endopept

What is panoramic x-ray, What is Panoramic X-Ray This is one of the mos...

What is Panoramic X-Ray This is one of the most vital radiological techniques in planning placement of dental implants. Not only will it give you the complete picture of the pe

Define about the sterols - non glyceride fractions, Define About the Sterol...

Define About the Sterols - Non Glyceride Fractions? These constitule a major proportion of the non-glyceride component while tocopherols, carotene pigments and flavour compound

Show the value of embryology, Q. Show the value of embryology? The valu...

Q. Show the value of embryology? The value of embryology in solving taxonomic problems can be appreciated by studying some specific cases. Amongst the classical examples cited

Amino acid sequence, Amino acid sequence  is also known as the primary stru...

Amino acid sequence  is also known as the primary structure of a protein/polypeptide; the series of amino acids in a protein/polypeptide controlled by the series of DNA bases.

Biological diversity protection, Q. How can a great biological diversity pr...

Q. How can a great biological diversity protect an ecosystem from environmental damage? Why are less biodiverse ecosystems at risk of suffering deep biological harm if submitted to

Plants, In school laboratory, what is usually regarded as evidence that pho...

In school laboratory, what is usually regarded as evidence that photosynthesis has occurred in a plant

Distribution coefficient -terminology used in chromatography, Distribution ...

Distribution Coefficient - Terminologies used in Chromatography? During the purification or separation of the biomolecules it should be kept in mind that two important factors

Diffrence between gymnosperms and bryophytes, Q. How different are gymnospe...

Q. How different are gymnosperms from pteridophytes and bryophytes? Gymnosperms are not cryptogamic as pteridophytes and bryophytes are. They are phanerogamic and so they form

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