Fate map - gastrulation in chick, Biology

Fate Map - Gastrulation in Chick

All the three main germinal layers (ectoderm, mesoderm, endoderm) are made from cells initially located in the epiblast in area pellucida, hence, the entire body of chick and most parts of the extra-embryonic membranes (yolk sac, amnion, chorion, allantois) are developed from cells derived from the epiblast. Therefore, the fate maps constructed for the blastoderm of chick embryo consider to the several presumptive organ making areas in the epiblast only. This map is based on the results of a number of studies by dissimilar workers by using a variety of in ovo and in vitro techniques involving staining with vital dyes, marking with carbon particles, labelling along with tritiated thymidine and subsequent autoradiography, grafting and transplantation of specific areas etc. The map displays the location and the extent of different areas in the blastoderm (epiblast) from where the presumptive cells are derived for the three germinal layers:

  1. Ectoderm (involving epidermal, neural and extra-embryonic ectoderm)
  2. Mesoderm (involving mesoderm for notochord, head, somites, lateral plate and extra-embryonic mesoderm) and
  3. Endoderm (involving gut and extra-embryonic yolk sac endoderm).

As a result of morphogenetic movements during gastrulation the cells from the several areas reach their respective specific destinations making the ectoderm on the surface, endoderm below and mesoderm among the two.

Posted Date: 1/25/2013 5:32:58 AM | Location : United States







Related Discussions:- Fate map - gastrulation in chick, Assignment Help, Ask Question on Fate map - gastrulation in chick, Get Answer, Expert's Help, Fate map - gastrulation in chick Discussions

Write discussion on Fate map - gastrulation in chick
Your posts are moderated
Related Questions
Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4

How is oil droplet different from micelles? Also describe the chemical make-up of each.

When a human donor gives a pint of blood, it generally requires how many weeks for body RESERVE of red corpuscles to be replaced? Is it: a) 7 week b) 3 weeks c) 1 weeks

Q. On average what is the life duration of the red blood cells? Where are they destroyed? What is the destination of the heme groups after the destruction of hemoglobin molecules?

Glycolysis Oxidation of glucose is called as glycolysis.Glucose is oxidized to either lactate or pyruvate. Under aerobic conditions and the dominant product within most tissues

SYM P A THETI C NERVOUS SYSTEM These sympathetic chain are connected with ramus comminicause of thoracic & lumber part. Due to this reason this system is called as t

Q. Explain Right Atrial Enlargement ? The right atrium (RA) is a globular chamber, forming the right heart border on the PA view. On the PA view, the border of the enlarged RA

what cell organelle does photosynthesis take place in?

Q. How different are gymnosperms from pteridophytes and bryophytes? Gymnosperms are not cryptogamic as pteridophytes and bryophytes are. They are phanerogamic and so they form

What is the function, other than protection, of the ribs? The ribs help to alter the volume of the thorax during breathing movements.