: a usually long and single nerve-cell process that usually conducts impulses away from the cell body.â axÂ·oÂ·nal \Ëak-sÉn-Él; ak-Ësaen-, -ËsÃ¤n-\ ËsÅn. adjective a usually long and single nerve-cell process that usually conducts impulses away from the cell body.
The significance of meiosis :-. 1. It maintains the same chromosome n umber in the sexually reproducing organisms. From a diploid cell, haploid gametes are produced which in turn fuse to form a diploid cell. 2. It restricts the multiplication of chromosome number and maintains the stability of the species. 3. Maternal and paternal genes get exchanged during crossing over.
Meiosis is necessary for sexual reproduction, which allows for greater genetic variation in a species. Single-celled organisms that reproduce by mitosis produce two identical daughter cells. Genetic variation only occurs by spontaneous mutations in the organism. By contrast, organisms that reproduce using sexual reproduction combine two sets of genetic material, one from the male and one from the female, to form offspring that are genetically distinct from their parents.