Fate map - gastrulation in chick, Biology

Assignment Help:

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.


Related Discussions:- Fate map - gastrulation in chick

To show the effects of yeast on dough, To show the effects of yeast on doug...

To show the effects of yeast on dough Mix together some sugar, water and flour in the proportions to make good bread dough. Divide the dough into two equivalent parts. Stir a h

Types of ribosomes, TYPE S OF RIBOSOMES Ribosomes are of two types: - ...

TYPE S OF RIBOSOMES Ribosomes are of two types: - 1 . Procaryotic Ribosomes - 70 s = Occur in cytoplasm of prokaryotes, and also in mitochondria, and Chloroplast o

Does the environment exert an influence on the phenotype, Does the environm...

Does the environment exert an influence on the phenotype? The phenotype may be altered (compared to the original situation conditioned by its genotype) by nongenetic means, ins

Classification of living things, Ask question what is classification of liv...

Ask question what is classification of livibg thingsMinimum 100 words accepted#

Cytological approach, Write an essay on cytological approach in taxonomy.

Write an essay on cytological approach in taxonomy.

What do you mean by polyphagia, Q. What do you mean by Polyphagia? Incr...

Q. What do you mean by Polyphagia? Increased Hunger (Polyphagia): As patient is losing more sugar in the urine, he feels hungry very soon and tends to take more food. It is cal

Brookes formula, Brooke's  Formula: a)  Fluid  requirement  b)  Es...

Brooke's  Formula: a)  Fluid  requirement  b)  Estimate the accurate/approximate weight of the patient  c)  First  24  hours  Colloids (blood, plasma, dextran) 0.5 ml

Determine the uni-ocular movements, Determine the Uni-ocular movements ...

Determine the Uni-ocular movements Uni-ocular movements are the movements of  one eye  studied  at  a time. That means, when left  eye is  covered, then movements  of  uncovere

Representatives of each protochordate subphylum, Into which subphyla are th...

Into which subphyla are the protochordates divided? What are some representatives of each protochordate subphylum? Cephalochordates and Urochordates (or tunicates) are the two

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