Briefly explain about semantides, Biology

Q. Briefly explain about semantides?

The information carrying molecules in plants are called semantides, and they have been recognised to be 3 kinds; deoxyribonucleic acid or DNA (primary semantide), ribonucleic acid or RNA (secondary semantide) and proteins (tertiary semantide) following the sequential transfer of the genetic code. Of these, the proteins are the most favoured molecules for chemotaxonomic purposes. Plant proteins can be studied by different methods; by electrophoresis or by serological methods, and both processes have been used for obtaining information about the protein chemistry of different plants.

In the common bread wheat, Triticum aestivum, the storage proteins were analysed by. electrophoresis. For comparative purposes, the storage proteins of the- tetraploid wheat, Triticum dicoccum and the dipliod grass Aegilops Squarrosa were also analysed electrophoretically study confirmed the conclusion that the hexaploid wheat did contain a sum of the proteins possessed by the diploid species which have contributed to the evolution of the hexaploid wheat. This study supports the observations based
on morphology and cytological evidence

Serological analysis of proteins is based on the immunological reaction shown by mammals when a foreign protein is introduced into the system. In other words, this is based on the antibody-antigen reaction, the antibodies being specific to an antigen bringing about coagulation. This information can then be analysed to understand the relationships of the different plants on the basis of the serological evaluation of the plant proteins. Serology has proved a useful taxonomic tool at different levels of classification. J. G. Hawkes (1960) and his co-workers studied several tuber-producing species of Solanum to understand the evolution of the cultivated potato Solanum tuberosum and determine the species of Solanum which could be established as the ancestors of the common cultivated potato, Similarly, in the family Ranunculaceae, serological studies supported cytological data for the classification of the family into tribes and genera. Fair brothers (1959) and his CO-workers have studied several plant groups serologically particularly the members of grass family. A general conclusion from such studies is that the different amount of serological activity in members of, different plant families may be interpreted as a reflection of the evolutionary differences in the primary structure of the proteins due to which serological differences can be recognised between members of different families.

Posted Date: 6/8/2013 2:46:03 AM | Location : United States

Related Discussions:- Briefly explain about semantides, Assignment Help, Ask Question on Briefly explain about semantides, Get Answer, Expert's Help, Briefly explain about semantides Discussions

Write discussion on Briefly explain about semantides
Your posts are moderated
Related Questions
PHYLUM CHORDATA Definition and Introduction Bilateral  and deuterostomial  eucoelomate eumetazoa, basically  possessing ,in  the embryo  or throughout life , a flexible,

typical growth curve in plants

Explain the Urinary Excretion Test - riboflavin status? Urinary excretion of riboflavin is determined at different levels of intake. Under conditions of adequate riboflavin int

PETHIDIN E - Meperidine hydrochloride. Widely used as narcotic analgesic. It has local anesthetic action. METHADON E - It is an orally effective anal

Q. Etiologic factor of diabetes? The precise etiology of diabetes is not known but multiple factors contribute to the disorder. These are reviewed herewith. Type I Diabetes

Explain the taxonomy of Lamarck? Lamarck's taxonomy was mainly static in nature and his classification does not show its true value to the development of modern taxonomy. His m

locomotion in parameceum

What are lichens? How do fungi participate in this ecological interaction? Lichens are produced by mutualist ecological interaction among fungi and algae or among fungi and cya

Q. Properties of foods? various properties of foods, under which the quality attributes of foods were introduced to you in terms of food quality and its categories as appearanc

Describe the factors that affect cardiac output in a female athlete who is speed skating toward the finish line in an Olympic race.