Theory of embryology - mosaic thoery, Biology

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.

Posted Date: 10/3/2012 6:54:50 AM | Location : United States







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

Write discussion on Theory of embryology - mosaic thoery
Your posts are moderated
Related Questions
please give us this phylem''s example...

What is Dinoflagellates ? Dinoflagellata or dinoflagellates , are characteristically unicellular photosynthetic organisms that usually have two flagellae. One flagellum typi

What is reproductive isolation? The Living beings are considered under reproductive isolation when they cannot cross among themselves or if they can cross but cannot generate f

why we add some sodium bicarbonate in water?

do fats with one or more 'kinky' tail fatty acids tend to be solid or liquid at room temperature? These are found in triglycerides forming what? Solid fats or oils? Is it opposite


Describe the evolution of egg structures and embryological development for animals that have become adapted to terrestrial existence.

What are the archenteron and the blastopore? What is the stage of the embryonic development in which these structures are formed? What are the destinations of the archenteron and o

What are diseases of the connective tissue? What are some of them? Diseases of the connective tissue are hereditary or acquired diseases(lots of autoimmune cause) characterized

Golgi complex is the organelles in animal cells having a sequence of ├żattened sacs which sort, chemically modify, and package proteins produced on the rough endoplasmic reticulum.