Theory of embryology - organizer theory, Biology

ORGANIZER THEORY -

  1. It was propounded by spemann (1901).
  2. He was given Nobel prize of 1935 for this wrok.
  3. He studied the embryonic development of frog, newt & other amphibians.
  4. He explained that a part of embryo secretes specific chemical which controls the differentiation of other tissues. The secretory tissues is called as inducer of organiser & the process is called as Induction.
  5. Spemann studied frog's gastrula & explained that the dorsal lip or roof of archenteron acts as primary organiser.
  6. Graham & Wareing supported the theory of organiser & stated that the induction is an intercellular process which controls morphogenesis & differentiation of embryo.
Posted Date: 10/3/2012 7:03:37 AM | Location : United States







Related Discussions:- Theory of embryology - organizer theory, Assignment Help, Ask Question on Theory of embryology - organizer theory, Get Answer, Expert's Help, Theory of embryology - organizer theory Discussions

Write discussion on Theory of embryology - organizer theory
Your posts are moderated
Related Questions
what is relationship between numbers CPH in photon and frequency of photon? Answer; the photon contains n CPH and its energy is E=hν, when photons energy increases that the num

WHY NETWORKING IN HOSPITALS Sharing of data is essential, especially in any kind of hospital setting. For staff and doctors of a hospital, if they have details of patients rea

composition formation and circulation of lymph

Determine about the prokaryotes and eukaryote cell The eukaryotic cells, on the other hand, have a true nucleus wherein the genetic material, DNA is enclosed within a well-def

Which invertebrate groups possess one, three, four or all of the features below?  Segmented bodies, hard exoskeleton, jointed legs, compound eyes, three pairs of walkin

Define Calamity and Emergency Management - nutritional needs of humans? During past many years, we have seen, as well as, realized -that natural calamities strikes countries, b

What are the main representatives of the pteridophytes? Is this plant group cryptogamic or phanerogamic? The better known pteridophytes are the ferns and the maidenhairs, from

Salmonellosis is the most reported zoonotic disease in European countries. Salmonellosis (Salmonella gastroenteritis) results from the ingestion of foods that contain significant n

Monomeric enzymes Monomeric enzymes are those which consist of only a single polypeptide chain, so they cannot be dissociated into smaller units. Very few monomeric enzymes are

Prior to the solving of the structure of DNA, Erwin Chargaff calculated the amounts of the four nucleotides (A, T,G,C) and made which of the following conclusions? A. All four