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

Explain polyenes - amphotericin b, Polyenes: amphotericin b Amphoterici...

Polyenes: amphotericin b Amphotericin B products are the only polyenes currently available for systemic treatment of fungal infections.  Nystatin, another polyene, is only avai

What are two specific actions in this, The major ecological imbalance on Ea...

The major ecological imbalance on Earth is between the human species and the rest of Earth's biota. What are two specific actions we could do to achieve a balance (for example, rec

What are the moderate intensity exercises, Q. What are the moderate intensi...

Q. What are the moderate intensity exercises? - Walking for 1/2% hr or jogging - Biking leisurely for 1/2 hr. - Playing tennis, swimming, gardening, golfing - Vacuumin

Define heterochromatin, Heterochromatin: Compact, gene-poor areas of a gen...

Heterochromatin: Compact, gene-poor areas of a genome, which are enriched in the simple sequence repeats. As it may be impossible to clone, heterochromatin is generally ignored wh

Explain food lipids, Explain Food lipids It is either consumed in the ...

Explain Food lipids It is either consumed in the form of "visible" fats, which have been separated from the original plant or animal sources, such as vegetable oil and butter,

Define chlorophyll - natural colourant, Chlorophyll Chlorophyll is the...

Chlorophyll Chlorophyll is the porphyrin most widely used as a natural colourant. Its widespread occurrence in photosynthetic  tissue and its breakdown character have prompted

Lead to protein denaturation, Q. What are some factors that can lead to pro...

Q. What are some factors that can lead to protein denaturation? Protein denaturation can be caused by temperature variation, pH change, changes in the concentration of surround

What do numeric pyramids represent?, What do numeric pyramids represent? ...

What do numeric pyramids represent? The Numeric pyramids represent the number of individuals in each trophic level of a food chain.

Define about the sucrose and trehalose, Define about the Sucrose and Trehal...

Define about the Sucrose and Trehalose? Sucrose, also called saccharose, is ordinary table sugar refined from sugar cane or sugar beets. Trehalose has two a-D-glucose molecu

Explain about posterior wall, Explain about Posterior wall Posterior w...

Explain about Posterior wall Posterior wall separates the antrum from the infra-temporal fossa and contains two important structures. Posterior superior alveolar nerve and

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