Theory of embryology - mosaic thoery, Biology

Assignment Help:

MOSAIC THOERY -

It was given by W. Roux.

He studied the development of frog's egg. He destroyed one cells by a hot needle out of 2-cells formed as a result of first cleavage. He observed that the remaining cell formed only half of the embryo.

On the basis of the above experiment, he derived a conclusion that the fate of various parts of the egg is predecided.

He further explained that these substances of the eggs remain undifferentiated before fertilization.

The fertilizaton causes reorientation of these substances & the cleavage separates these substances.


Related Discussions:- Theory of embryology - mosaic thoery

Internal structure of the heart of man, Internal structure of the heart of ...

Internal structure of the heart of man Internally there are four chambers in the heart. The upper two chambers are called auricles and the lower two chambers are called vent

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

Morphology, Condensed which is specialised to take part in sexual reproduct...

Condensed which is specialised to take part in sexual reproduction of angiosperm is called

Tracheostomy care, Tracheostomy Care A tracheostomy is an external ope...

Tracheostomy Care A tracheostomy is an external opening made into the trachea in order to provide an artificial airway (an opening is made in the 2nd and 3rd or 4th trach

Hepatitis, He p atitis Hepatitis is defined as degenerative/ inflamma...

He p atitis Hepatitis is defined as degenerative/ inflammatory processes of the liver. The clinical manifestations associated with hepatic dysfunctions results from impairmen

How does the intensity of simple diffusion differ, How does the intensity o...

How does the intensity of simple diffusion differ in relation to the concentration gradient of the moved substance? The higher the concentration gradient of a substance the ext

What are primary indications for pharmacologic stress, Q. What are primary ...

Q. What are primary indications for pharmacologic stress? The primary indications for pharmacologic stress are inability to exercise or the desire to identify viable myocardium

What is aprecise diagnosis, Q. What is Aprecise diagnosis? Aprecise dia...

Q. What is Aprecise diagnosis? Aprecise diagnosis is necessary to establish the mode of therapy. Patients with initial blood phenylketonuria level of 121 m moll1 (> 2 mg/dl) sh

Modern cell theory, MODER N CELL THEORY Also known as cell doctrine or...

MODER N CELL THEORY Also known as cell doctrine or cell principle. [Cell theory + cell lineage theory = cell principle] Schleiden-Schwann's cell theory and cell lineage

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