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
Explain Interaction of pyridoxine with Carbohydrates? Pyridoxine is involved in glyconeogenesis through its action in transaminase reactions. Low levels of pyridoxine impair gl

Prophylaxis Medical Letter consultants generally do not prescribe antibiotic prophylaxis for travelers' diarrhea, but rather instruct thec patient to begin self-treatment when

what year was homo erectus fossils found


Distinguish between epithelial and connective tissues with respect to their cell arrangement? PROVIDE a specific example (for both tissue types) of how the arrangement of cells hel

Stage two using a mucoperiosteal flap A Mid crestal incision over the implant site is made and reflection of mucoperisteal flap is done under local anesthesia. After locating t

Given a polymer backbone of H-C-C with the first carbon having 2 H atoms attached and the 2nd carbon with 3 atoms attached, a bond with a water molecule attaches to the left H atom

Q. What is compound that is phosphorylated for ATP formation? What is resulting compound when ATP liberates energy? adenosine triphosphate or ATP is formed after the binding of

When did life appear on earth? It is estimated that the life on earth emerged about 3.5 billion years ago, thus 1 billion years after the formation of the planet.

General Guidelines While working in the ward, you are always required to record. You should follow the general guidelines while recording which are as follows: All entri