Cleavage - development biology, Biology

Assignment Help:

Cleavage - Development Biology

Cleavage or segmentation is a series of cell divisions of the fertilized .egg through which it is converted into a multicellular structure, called blastula. The main characteristics of cleavage include:

  1. The unicellular fertilised egg is transformed by consecutive mitotic divisions into a multicellular body.
  2. Particularly no growth takes place during cleavage.

The cell divisions in the somatic cells are mitotic. The daughter cells or blastomeres or cleavage cells are also derived as a result of mitotic divisions of the zygote. We may ask whether there are any differences between mitotic divisions of somatic cells and, of the zygote and the blastomeres derived from it during cleavage.


Related Discussions:- Cleavage - development biology

Under which form is nitrogen fixed by living beings, Q. Under which form is...

Q. Under which form is nitrogen fixed by living beings? The Most living beings can't use molecular nitrogen to obtain nitrogen atoms. The Producers fix nitrogen primarily from

Animals - slow moving waters, Animals - Slow Moving Waters Zooplankton...

Animals - Slow Moving Waters Zooplankton are common here and include an assemblage of protozoa and smaller crustacean, such as water flies, and copepods. Neuston occurring her

Explain oxygen therapyin respiratory support, Explain Oxygen Therapyin resp...

Explain Oxygen Therapyin respiratory support? Oxygen is given to correct hypoxemia. An initial high concentration of oxygen (FiO2) is given while the underlying cause is identi

Explain about the proteins, Explain about the Proteins? Proteins, as yo...

Explain about the Proteins? Proteins, as you may already know, are made up of carbon, hydrogen, nitrogen, oxygen and usually sulphur. Proteins are built up of a large number of

Explain post-lyme disease syndrome, Explain Post-lyme disease syndrome  ...

Explain Post-lyme disease syndrome  Some treated patients whose objective manifestations of Lyme disease have resolved with antibiotic treatment report subjective symptoms suc

Marine animals, Marine Animals The composition of body fluids of mari...

Marine Animals The composition of body fluids of marine invertebrates, including the ascidians are similar to seawater. Such animals need not expend much energy in regulating

How is the early diagnosis of genetic diseases usually done, How is the ear...

How is the early diagnosis of genetic diseases usually done? The Genetic disease may be diagnosed in the prenatal period by karyotype analysis, in case of aneuploidies, or by D

Enema, Enema Enema may be given for the purpose of cleansing, for t...

Enema Enema may be given for the purpose of cleansing, for therapeutic purpose; to relieve intra-cranial pressure, abdominal distension, intusssception and for diagnostic p

Find out bonding geometry of c, The bonding geometry of C,O,N is determined...

The bonding geometry of C,O,N is determined by- Select one: a. The number of electrons in their outer energy level b. SP3 hybridization of orbitals in the valence shell

Describe two differences among green algae and plants, Describe two differe...

Describe two differences among green algae and plants. Algae lack tissue differentiation and have no true roots, leaves and stems. The gametangia of algae are single-celled; th

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