What Are Significance Of Meiosis Stages?
1. Crossing over and random assortment of chromosomes are two significant happenings of meiosis. During crossing over, parental chromosomes exchange segments with each other which results in large number of recombination. At the same time during anaphase the separation of homologous chromosomes is random, which gives very wide range of variety of gametes. Both these phenomenon cause variations and modifications in the genome. These variations are not only the bases of evolution, but also make every individual specific, particular and unique in his characteristics. Even the progeny of very same parent, i.e., brothers and sisters are not identical to each other. 2. Meiosis usually takes place at the time of sexual cells(gamete) formation, spore formation in plants, thus halving the number of chromosomes in each, which is restored after fertilization and maintains chromosome number constant generation after generation.
