Distinguish anaphase of mitosis from anaphase of meiosis
CBSE Class 11
CBSE Class 11 Biology
2016-07-21 10:09:23 UTC
Anaphas of mitosis :
Anaphase stage is characterised by the following key events: (i) Centromeres split and chromatids
separate. (ii)Chromatids move to opposite poles.
Each chromosome arranged at the metaphase plate gets split simultaneously and the two daughter chromatids, now referred to as chromosomes of the future daugther nuclei, begin their migration towards the two opposite poles.
As each chromosome moves away from the equatorial plate, the centromere of each chromosome is towards the pole and hence at the leading edge, with the arms of the chromosome trailing behind.
Anaphase I of meiosis :
1.The homologous chromosomes separate, while sister chromatids remain associated at their centromeres.
2.The spindle fibres contract and pull the centromeres of homologous chromosome towards the opposite poles.
3.The centromere is not divided. Thus half of the chromosomes of the parent nucleus go to one pole and the remaining half in the opposite pole.