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
Explain Nutritional Biochemistry A  good understanding  of the  biochemical  basis  of  nutrient function  and  of  the consequence of nutrient deficiency  or excess  is  impo

What is Mitochondria ? Mitochondria are the cellular organelles responsible for the conversion of energy into a form called ATP. ATP is a high energy chemical compound that cel

Pound cake test In some cases, oil or margarine creaming volume is most accuratelymeasured by preparing a regular pound cake, omitting the chemical leavener andmeasuring the vo

A woman who is heterozygous for a particular X-linked recessive trait marries a phenotypically normal man. What percentage of their sons will show the recessive phenotype?

Open and Closed Type of Circulatory Systems There are two categories of circulatory system found in higher metazoans. In one type the original blastocoel carries on to be the

1) What are some characteristics that define the lifestyle of a parasitic nematode? 2) What are beneficial nematodes? Discuss their significance

what are the organs of respiration in lower forms of animals?

Photochemical smog results from automobile pollutants reacting with what?

Epimorphic Regeneration In this sort of regeneration the lost part is reformed and restored via the growth of a bud or blastema from the remaining part of the organism followe

What is Class Gastropoda in animal kingdom? Snails and slugs are referred to as gastropods because of their characteristic body plan. "Gastro" is derived from the Greek word fo