Theory of embryology - organizer theory, Biology

Assignment Help:

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.

Related Discussions:- Theory of embryology - organizer theory

Sorbic acid and its salts -preservative, Normal 0 false fa...

Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4

Problem of polarity in regeneration in planarians, Problem of Polarity in R...

Problem of Polarity in Regeneration in Planarians As in Hydra, flatworm regeneration as well appears to occur in a polar fashion. There seems to be ananterior-posterior gradie

Explain nutritional and functional role of aluminium, Minerals :- Aluminium...

Minerals :- Aluminium                Food Source       Low and variable in foods, component of some antacids and leavening agents Nutritional Functional role Possib

Define protein requirements of children up to age of 2 years, Define protei...

Define protein requirements of children up to age of 2 years? Infants and children up to age of 2 years should consume about 40% energy from fat (i.e. 40 en%). Fat is an import

Temperate evergreen forest - ecosystem, Temperate evergreen forest - Ecosys...

Temperate evergreen forest - Ecosystem Many parts of the world have a mediterranean type of climate which is characterised by warm, dry summers and cool, moist winters. These

The Human Inpact on the Environment, Name the four organisms which are curr...

Name the four organisms which are currently in danger of extinction because of human activities?

Differentiating causes of hypoxemia, Study and complete the following Mini ...

Study and complete the following Mini Clini: Differentiating Causes of Hypoxemia. Explain the pathophysiological mechanism of how the following disorders cause hypoxia: Pleu

Deficiency diseases-copper deficiency, Copper deficiency Copper deficie...

Copper deficiency Copper deficiency may be primary or secondary (conditional). Primary copper deficiency occurs due to its inadequate dietary intake; whereas secondary copper d

The Integumentary system, what are some technologys used in the integumenta...

what are some technologys used in the integumentaryy systems

History - assessment of patents with cardiovascular probems, History P...

History Past and present history of cardiovascular problems of patient & family. History of chest pain, shortness of breath, fatigue, abnormal skin colour, dizziness, vertigo

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