Characterstics of cleavage, Biology

CHARACTERSTICS OF CLEAVAGE -

  1. In cleavage involve the series of mitotic division, so daughter cells are genetically similar to the parental cell.
  2. The resulting cells are called blastomere.
  3. During cleavage, there is no growth during interphase period, so the size of blastomeres become smaller and smaller.
  4. Blastomere do not move, so the size, volume and general shape of blastula remain same throughout the cleavage.
  5. The rate of cleavage is more in the beginning but gradually it becomes slow. It is decided by the ooplasm.
  6. O2 consumption increased during cleavage.
  7. Lack of Oand excess of COinhibit the process of cleavage.
  8. Initially karyo-cytoplasmic ratio is low in cleavage but in the last it become similar to the somatic cell.
  9. Every cleavage result in double number of blastomere.

 

Posted Date: 10/3/2012 8:52:06 AM | Location : United States







Related Discussions:- Characterstics of cleavage, Assignment Help, Ask Question on Characterstics of cleavage, Get Answer, Expert's Help, Characterstics of cleavage Discussions

Write discussion on Characterstics of cleavage
Your posts are moderated
Related Questions
The human blood group, related to the MN system is controlled by two alleles, S and s. Three distinct phenotypes can be identified by mean of biochemical tests. Among 1000 Britishe

Q. Study of food texture? We learnt earlier that texture is observed in terms of tactile sensations i.e. finger feel and mouth feel. Finger feel is sensed before ingestion, by

What is the main function of chloroplasts? Ans) Chloroplasts are organelles represent in the cytoplasm of plant and algae cells. Similarly mitochondria, chloroplasts have two bo

Cell Theory The term cell was first used by an English cytologist, Robert Hooke (1665) not for unit protoplasmic masses, but for the well defined and empty compartments, he obs

Q. What are the major cellular features of fungi? There are pluricellular and unicellular fungi. All fungi are heterotrophs and eukaryotes. Fungi have cells with cell wall m

Medical and First Aid - Factors Affecting Occupational Health Depending on the type of work the industry must make arrangement for readily available medical facility. A nearby

Define the Petrifilm (dry film) Method? An alternative method to the conventional SPC is a Petrifilm (dry film) method. It is a non-petri dish plating system where a layer of n

define inflorescence and explain in detail about it''s types

What two biotic factors could affect an antelope living in the Serengeti? The biotic factors that may affect an antelope living in the Serengeti could be:predation by carnivore

Rheumatic heart disease was the predisposing cardiac lesion for IE in 20 to 25 per cent. In patients with rheumatic heart disease, endocarditis occurs most frequently on the mitral