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 is frog central nervous system, What is frog central nervous system ...

What is frog central nervous system Consider Neuron B in the frog central nervous system whose plasma membrane has a newly discovered ligand-gated ionotropic receptor, named th

Define briefly about vitamin B1, Vitamin B 1 (Thiamine hydrochloride) ...

Vitamin B 1 (Thiamine hydrochloride) a) Thiamine hydrochloride is a white, crystalline powder, slightly hygroscopic, of an odour resembling yeast and of bitter to taste. b)

Reproduction and life cycles – protozoan, Reproduction and Life Cycles – Pr...

Reproduction and Life Cycles – Protozoan Asexual reproduction occurs in all protozoan through fission, budding and cyst formation. In this method the organism reproduces to fo

Biological challenges, Biology is becoming a more quantitative science, a t...

Biology is becoming a more quantitative science, a trend that has motivated and been recently spurred by advances in computing power and data-gathering technologies. Nowhere is th

Enzyme-controlled reaction, If an enzyme-controlled reaction normally takes...

If an enzyme-controlled reaction normally takes place at 10ºC, in general terms how will the reaction be affected by  (a) a fall in temperature to 2°C , (b) a rise in temperature t

Theoretical foundation of halsted reitan battery, Theoretical Foundation of...

Theoretical Foundation of Halsted Reitan battery There are really two theoretical bases for the Halsted Reitan battery, one contained in brain and intelligence and related writ

Tools used in taxonomy, Q. Tools used in Taxonomy? Before you plan for ...

Q. Tools used in Taxonomy? Before you plan for a field trip decide the tools and equipment required. Certain, equipments are necessary for plant collection. A collecting pick i

Modern theory in biology, Modern Theory Naturalistic theory: Accordin...

Modern Theory Naturalistic theory: According to this theory Life originated upon our earth spontaneously from nonliving matter. But there are two significant points in this r

Care of psychoemotional aspects of patient in icu, Care of Psychoemotional ...

Care of Psychoemotional Aspects ICU area is an area which is cut off from outside world. Modem ICUs are built in such a way that the sensory deprivation is reduced. Ta

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