Gastrulation in some animals, Biology

Gastrulation in some Animals

As mentioned before gastrulation marks the beginning of morphogenesis that is development of body form and organisation of cells in the embryo. By the end of this process the groups of cells destined to make different tissues and organs are arranged in their relevant proper positions within the three germinal layers (ectoderm, mesoderm, and endoderm) and the primitive basic body plan of the animal is recognized.

Though, in different groups of animals gastrulation occurs in different ways ascertained mainly by the type of egg and subsequent pattern of cleavage and the structure of blastula. You will study gastrulation as it takes place in echinoderms amphibians, birds and eutherian mammals. The description will help you to understand the difference in the method of gastrulation because of the effect of the amount of yolk and pattern of its distribution in the egg, subsequent pattern of cleavage and the final structure of the blastula.

Posted Date: 1/25/2013 4:54:44 AM | Location : United States







Related Discussions:- Gastrulation in some animals, Assignment Help, Ask Question on Gastrulation in some animals, Get Answer, Expert's Help, Gastrulation in some animals Discussions

Write discussion on Gastrulation in some animals
Your posts are moderated
Related Questions
ERRORS IN FERTILIZATION  - 1.       Polyspermy - When more than one sperms are fused in an ovum, this condition is called polyspermy. 2.       Polygynae - During oogen

PAEDIATRIC NURSING   Parent education, family health promotion and health maintenance have been the concern of yesterday's and today's nurses. Florence Nightingale over a hu

Q. Of what substance is the plant cell wall made? Of which monomer is it made? The plant cell wall is made of cellulose. Cellulose is a polymer whose monomer is glucose. There

Mention the information that the health workers get by measuring BOD of a water Body. a) Name the enzyme included in the continuous replication of DNA strand. Mention the Polar

Clinical Manifestation   Early onset of dyspnea on exertion (DOE) which progresses to continuous dyspnea. Rhonchi, crackles , accessory muscle breathing, Increased rate of br

What does the formula DPD = SF - TP mean? DPD is the abbreviation of diffusion pressure shortage, SF (suction force) is the vacuolar osmotic pressure and TP is the turgor press

Involution - Internalization of Mesoderm As by now mentioned, in the frog Xenopus (and probably in other amphibian species as well) the cells of presumptive mesoderm are in t

What are the apical meristems? Which kind of plant growth does this meristem promote? The Apical meristems are those primary meristems found in the apex of the stem as well as

Define Post-surgical Nutrition Support for CHD Patient? Nutrition support should be started as soon as possible. If oral not possible, enteral nutrition support should be pr

project formate for monocot and dicot plants in feild per month