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
Do a bit of research on gene splicing, a DNA technology that bioengineers can use to create organisms with traits that never before seen in nature (herbicide-resistant crops, mice

What do you understand by Pseudocoelomate? Animals that have a body cavity which is not completely lined by mesoderm. In past these organisms were referred to as the phylum Asc

Aortic Allograft (Homograft) :  In the earlier years fresh antibiotic preserved aortic allografts were tried. As the shelf life is limited, availability of all sizes at all t

Q. Are the extraembryonic membranes the same in all vertebrates? The presence of each extraembryonic membrane differs according to the vertebrate class. In amphibians and fi

Left Antero Lateral Thoracotomy Approach :  Arterial and central venous pressure monitoring lines are placed. A left antero lateral thoracotomy is done through the 5th or 4th

Q. How long after ovulation must fecundation occur to be effective? If fecundation doesn't occur around 24 hours after ovulation the released ovum often dies.

Minerals : Bromine                 Food Source       Brominated flour  Nutritional Functional role Not known to be essential to humans. Dough improver: KBrO 3 impr

Salmonellosis Salmonellosis is an infection caused by bacterial species belonging to the genus Salmonella and usually associated with the ingestion of food containing salmonel

Define Class Turbellaria - Flatworms ? Members of these two Classes are known as the flukes. Flukes are parasitic flatworms that inhabit tropical areas like Southeast Asia and

In humans, the recessive allele that causes a form of red-green colour blindness (c) is found on the X chromosome. a) Determine the genotypes and phenotypes of the F1 generation fr