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

Gregor mendel, why green seeds reappeared in the f2 generation

why green seeds reappeared in the f2 generation

Define about ecological models, Why do ecological models commonly have limi...

Why do ecological models commonly have limited applications? The applications of ecological models are limited due to the models are normally very simple and do not accurately

What do you mean by pelvic girdle, What do you mean by Pelvic Girdle? B...

What do you mean by Pelvic Girdle? Bones in vertebrates which connect the appendages on left and right side of the posterior appendicular skeleton to each other. Pelvic girdles

Define resolution - terminologies used in chromatography, Define Resolution...

Define Resolution - terminologies used in chromatography? Resolution is the effectiveness of the separation and is determined by two factors. These include: Distance

Explain the human body system and organs, Body systems and organs and their...

Body systems and organs and their functions The human body is a large structural unit made up of many smaller parts. There are four kinds of smaller units - cells, tissues, org

What is cyanosis, What is Cyanosis ? Cyanosis: Cyanosis may be peripher...

What is Cyanosis ? Cyanosis: Cyanosis may be peripheral or central. Peripheral cyanosis almost exclusively involves lips and extremities. Normal neonates may have bluish extrem

Define assessment of chromium status, Define Assessment of Chromium Status?...

Define Assessment of Chromium Status? No specific tests are currently available, which could help us to determine chromium status. Another reason being the chromium content of

Define the organism of clotting process, Q. How does the organism understan...

Q. How does the organism understand that a clotting process must begin? When there is some tissue wound with injury of blood vessel the platelets and endothelial cells of the w

Polymorphism in lysosomes, Polymorphism in Lysosomes Polymorphism, i.e. e...

Polymorphism in Lysosomes Polymorphism, i.e. existence of a structure in more than one form, is an important feature of lysosomes. Several different forms of lysosomes have been

What is pulmonary embolism surgery indications, What is Pulmonary Embolism ...

What is Pulmonary Embolism Surgery Indications ? Indications for Surgery :  Acute pulmonary embolism with haemodynamic instability and hypoxaemia is nearly always fatal. Mor

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