Optic vesicle, Biology

Assignment Help:

Optic vesicle

We have explained earlier that the presumptive material for the optic vesicles lies in qe eye field in the anterior region of the early neural plate. Experiments on amphibian embryos have displayed that if at this early open neural plate stage this material is cut out and grafted in the flank of another embryo it forms an eye cup displaying that the cells of eye field are already determined to form the eye. This determination is preceded by induction of the ectoderm to form the neural plate by the invagination chordamesoderm throughout gastrulation.

This is followed by the inductive action of the anterior part of chordamesoderm which comes to be underneath the prospective forebrain region of the neural plate, on the anterior part of neural plate. If this mesoderm is eliminated at this stage the eye field does not split and one median eye is formed. Furthermore, if this anterior chordamesoderm is grafted within the prospective hind brain region of the neural plate it induces an eye field in that region. Continued relation with mesoderm is as well essential for further development of the optic vesicle.


Related Discussions:- Optic vesicle

Mr, Define animals

Define animals

Find out the degrees of freedom, -The expected phenotypic ratio of offsprin...

-The expected phenotypic ratio of offspring. -The expected genotypic ratio of offspring. -Calculate the expected values you would use on a chi-square test (use genotypic rati

Explain about the niacin (nicotinic acid) deficiency, Explain about the Nia...

Explain about the Niacin (nicotinic acid) deficiency? Niacin (nicotinic acid) deficiency classically results in pellagva, which is a chronic wasting disease associated with a c

Bacteria anerobic respiration, how does the bacteria clostrium tetani respi...

how does the bacteria clostrium tetani respire anerobically

taxonomy, what are the phase of alpha taxonomy

what are the phase of alpha taxonomy?

Describe the shape and size of proteins, Shape and size of protiens ...

Shape and size of protiens Fibrous proteins for example: keratin in hair, actin and myosin in muscles, and collagen. Globular proteins, for example enzymes and antibo

State the concepts of soil- pedology and edaphology, State the concespts of...

State the concespts of soil- pedology and edaphology In the last two centuries of scientific study, two concepts or approaches to the study of soil have evolved.  One called  p

Serendipidity, SERENDIPIDIT Y - Sometimes discoveries are made unexpec...

SERENDIPIDIT Y - Sometimes discoveries are made unexpectedly matter of chance. This is serendipidity. Examples - 1.       Structural formula of benzene - It was dreamt by

Aujeszky''s disease, Aujeszky's disease This is primarily a disease of...

Aujeszky's disease This is primarily a disease of pigs, which serve as the principal reservoir host. The secondary hosts include cattle, horse, sheep, goat, dog and cat but hu

Explain diffusion and osmosis in cell structure, Explain Diffusion and Osmo...

Explain Diffusion and Osmosis in cell structure? Diffusion and Osmosis :  Diffusion through a cell membrane occurs as it does elsewhere, from an area of high concentration of

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