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

Is gene a triplet of consecutive dna nucleotides, Is gene a triplet of cons...

Is gene a triplet of consecutive DNA nucleotides A gene isn't a triplet of DNA nucleotides with their respective nitrogen-containing bases, like CGT or AAG. The nucleotide trip

What are the parts of a surgical needle, What are the parts of a surgical n...

What are the parts of a surgical needle. How do you classify surgical needles The surgical needle is comprised of 3 parts: the needle point, the needle body, and the swaged (pr

Into which subphyla are the protochordates divided, Into which subphyla are...

Into which subphyla are the protochordates divided? What are some representatives of each protochordate subphylum? Urochordates (or tunicates) and cephalochordates are the two

What do you understand by pseudocoelomate?, What do you understand by Pseud...

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

What is the typical feature of the epithelia, Q. What is the typical featur...

Q. What is the typical feature of the epithelia? How different is it from the connective tissue? The typical feature of the epithelium is the almost absence or absence of space

Plant physiology, detail notes on seed dormancy and seed germination

detail notes on seed dormancy and seed germination

To study if bacteria grow better where it is dark or light, To study if bac...

To study if bacteria grow better where it is dark or light Inoculate two sterile dishes as before. Label one 'dark' and the other 'light'. Place the 1st dish in a darkwarm plac

What are the difference between plasma membrane, Q. What are the difference...

Q. What are the difference between plasma membrane and cell wall? Plasma membrane and cell wall is not the same thing. Plasma membrane, also known as cell membrane, is the exte

Find the modalities in stress testing, Q. Find the Modalities in stress tes...

Q. Find the Modalities in stress testing? In addition to electrocardiographic stress testing, there are various newer modalities that can be very useful in the determination o

Mixed mitral stenosis and regurgitation, Mixed Mitral Stenosis and Regurgit...

Mixed Mitral Stenosis and Regurgitation The most common cause for a combined lesion is rheumatic, Very rarely; it could be of congenital origin. Regurgitation in a stenotic val

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