Theory of embryology - organizer theory, Biology

Assignment Help:

ORGANIZER THEORY -

It was propounded by spemann (1901).
He was given Nobel prize of 1935 for this wrok.
He studied the embryonic development of frog, newt & other amphibians.
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.
Spemann studied frog's gastrula & explained that the dorsal lip or roof of archenteron acts as primary organiser.
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

Define carbohydrate requirements for physical fitness, Define Carbohydrate ...

Define Carbohydrate Requirements for Physical Fitness? Carbohydrate is the primary fuel for high intensity exercise, Increased intake of carbohydrate on a consistent basis enab

Explain directly observed therapy of tuberculosis, Directly observed therap...

Directly observed therapy In treating TB, poor adherence to therapy is the most important cause of treatment failure and is associated with emergence of drug resistance. Medica

Explain process of glycosylation, Glycosylation: The covalent addition of ...

Glycosylation: The covalent addition of the sugar moities to N or O atoms present in the side chains of various amino acids of certain proteins, usually occuring within the Golgi

Mechanism of regeneration, MECHANISM OF REGENERATION - T.H. morgan reco...

MECHANISM OF REGENERATION - T.H. morgan recognised 2 primary mechanisms - M o r ph o l axis Epim orphosis 1. Production of enti

Determine the cylindrical body of nematodes brought, Compared to platyhelmi...

Compared to platyhelminthes which physiological problem have the cylindrical body of nematodes brought? How was that problem solved? The cylindrical shape of nematodes made imp

Basic principles involved ark, Q. Basic principles involved ark? The ba...

Q. Basic principles involved ark? The basic principles involved ark: The individual must be treated as such and for that careful initial history - daily living situation, a

Procedure for testing vanaspati and rancidity in ghee, Procedure for testin...

Procedure for testing Presence of Vanaspati and Rancidity in Ghee? Carry out the steps enumerated herewith for conducting this exercise. For Vanaspati Checking: 1. Take 5

What proportion of children with down syndrome found, What proportion of ch...

What proportion of children with Down syndrome do you expect when women with down syndrome have children with men who have 46 chromosomes? Justify answer

Define essential parts of photocolorimeter - light source, Define Essential...

Define Essential Parts of Photocolorimeter - Light Source? The light source is usually a tungsten lamp, for wavelength in the visible range (320-700 nm) and a deuterium or hydr

Sonu, my question is what is phyletic lineage

my question is what is phyletic lineage

Write Your Message!

Name

Email id

Message

Verfication Code

User Account

All Pages