Anaphase, Biology

Assignment Help:

Anaphase

This  phase is of shortest duration. It  begins  with  a sudden  separation  of the two chromatids of each   due  to splitting   of its centromere and  then a slow movement of  separted  chromatids  towards  opposite  poles  of mitotic   spindle . Factors responsible for splitting of centromeres and movement  of attachment  fibres, or  the fibres gradually  shorten,  pulling the chromatids towards   the  poles. Shortening of these  fibres may be due to their  contraction (due  to the  presence of contractile actin  proteinin these ) or  their  gradual depolymeriaztion  at polar  ends Simultaneously, however  the continuous spindle fibres somewhat  elongate, pushing the  spindle  poles more apart. Towards  the end of anaphase  when polar migration  of chromatids is complete , these  is a full  chromosomal  complement  at each  pole identical to the original karyotype  of parent cell. Soon, a nuclear envelope forms around each polar group, presumably from the endoplasmic reticulum.


Related Discussions:- Anaphase

What are the tissues that form the digestive tube wall, Q. From the lumen t...

Q. From the lumen to the external surface what are the tissues that form the digestive tube wall? From the internal surface to the external surface, the digestive tube wall is

Access cavity perforation - types of root perforation, Access Cavity Perfor...

Access Cavity Perforation - Types of Root Perforation Can occur during access cavity perforation (specially in anterior) Due to misdirection of bur during access cavit

Explain about genetic engineering, Genetic engineering has been successfull...

Genetic engineering has been successfully used for producing: 1. Transgenic mice for testing safety of polio vaccine before use in humans 2. transgenic models for studying ne

Bitter taste, Q. Bitter Taste? Bitterness is an inherent property of a ...

Q. Bitter Taste? Bitterness is an inherent property of a substance. It is due to substances such as alkaloids present in food. For example, tannins present in tea, coffee, frui

Treatment of heart failure, Over the past decade, the conceptual understand...

Over the past decade, the conceptual understanding of heart failure has changed significantly. Several large clinical trials have demonstrated that non-pharmacological and pharmaco

Two major causes of severe protein energy malnutrition, Explain Two major c...

Explain Two major causes of severe Protein Energy Malnutrition? Two major causes of severe PEM are diluted milk formulae and infections, especially diarrhoea in poor communiti

Chemical reaction to unite amino acids liberate, Q. Does the chemical react...

Q. Does the chemical reaction to unite amino acids liberate or incorporate atoms? What are the chemical entities liberated or incorporated in this reaction? The union of amin

Acute myocardial infarction with haemodynamic deterioration, Acute Myocardi...

Acute Myocardial Infarction with Haemodynamic Deterioration :  These patients may require urgent insertion of intra aortic balloon pump (IABP) followed by PTCA or surgery. 50 per

Define mechanism for copper absorption, Define Mechanism for Copper Absorpt...

Define Mechanism for Copper Absorption? As in the case of other minerals, copper absorption appears to occur by two mechanisms: i) Saturable active mechanism, which operates

Development projects - deforestation, Development Projects - Deforestation ...

Development Projects - Deforestation The use of science and technology to support the ever- increasing needs of man is termed as development. In the recent years, the human po

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