Cleavage and gastrulation, Biology

Assignment Help:

Cleavage and Gastrulation

Eventually, one spermatozoon fuses with the ovum to r restore the diploid genomic condition and activates all the potentials in the fertilized egg cell or zygote to develop into a new individual of the next generation. But the zygote is one cell and the adult body in the Metazoa is constituted of many cells - from a few hundred to many billions of cells. It implies that the unicellular zygote must enter the phase of rapid divisions in quick succession to convert itself into a multicellular body.

Such a series of divisions of the zygote is known as cleavage or segmentation. In this multicellular structure formed as a result of cleavage the various cells or cell groups later become rearranged as layers and sub layers during a process called gastrulation. Cleavage and gastrulation are significant phases in the ontogenetic development because cleavage transforms the unicellular zygote into a multicellular body and gastrulation lays the foundation of primary organ rudiments so as to initiate the formation of organs according to the body plan of the particular metazoan group of animals to which the particular individual belongs.


Related Discussions:- Cleavage and gastrulation

Define trauma - nutrition during stress, Define Trauma - Nutrition During S...

Define Trauma - Nutrition During Stress? The term "trauma" conies from a Greek word which means "a wound" (and or damage or defect). Trauma is a form of shock to the human body

Adaptatin, what are the adaptations of amoeba

what are the adaptations of amoeba

Are all pneumonias caused by bacteria, Q. Are all pneumonias caused by bact...

Q. Are all pneumonias caused by bacteria? The Pneumonia is the generic name of inflammation of the lungs. Moreover bacterial pneumonias, there are pneumonias caused by fungi, v

Blood coagulation, BLOOD COAGULATION -   DEFINITIO N - The pro...

BLOOD COAGULATION -   DEFINITIO N - The property of blood to change from fluid to gel state within a few minutes of its coming in contact with air is called blood coag

Name the classes of biomaterials, Explain the classes of biomaterials W...

Explain the classes of biomaterials When an artificial material is placed in the human body, tissue reacts in a variety of ways depending on the material type thereby, affectin

Lan in hospitals, LAN LAN stands for Local Area Network. This kind of ...

LAN LAN stands for Local Area Network. This kind of network consists of a set of interconnected computers that are not geographically spread out over a large area. For exa

Infectious and chronic diseases, Infectious and Chronic Diseases The m...

Infectious and Chronic Diseases The most prevalent diseases of poverty, many of which are also infectious by nature, are malaria, tuberculosis, respiratory infections, water b

Explain the dietary management of sepsis and mods, Explain the Dietary Mana...

Explain the Dietary Management of Sepsis and MODS? Patients suffering from sepsis and/or resultant multiple system organ dysfunctions are critically ill and admitted in the int

Organism to present a large intestinal surface, Q. After digestion the next...

Q. After digestion the next step is absorption done by cells of the mucous membrane of the intestine. For this task a large absorption surface is an advantage. How is it possible i

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