11. These are the body's mother cells . 12. During this time, the megaspore mother cell divides by meiosis to form four haploid cells, three of which degenerate. 13. In meiotic sporogenesis, a diploid spore mother cell within the sporangium undergoes meiosis, producing a tetrad of haploid spores. 14. This establishes the asymmetric distribution of Numb, with the Numb / Pon crescent on one side of the mother cell . 15. A ganglion mother cell ( GMC ) is the cell derived from the division of a neuroblast in the GMC. 16. It usually has 32 spores per sporangium, but many with only 16 have been observed, produced from eight 2n mother cells . 17. The body's mature cells do not divide very much, but when they do, a mother cell produces two identical daughter cells. 18. During neurogenesis, Numb localizes to one side of the mother cell such that it is distributed selectively to one daughter cell. 19. Equivalence groups have also been described in the ganglion mother cells in grasshopper and the O / P teloblasts in the leech. 20. Neuroblasts are the progenitor cells which divide asymmetrically to give rise to another neuroblast and a ganglion mother cell ( GMC ).
