A row of sporogenous cells derived from archesporial cells produced a large number of microspore mother cells
after several mitotic divisions (Fig.
The axial cell retains most of the cytoplasm of the mother cell
and enlarges after each cell division.
As each mother cell
splits down the middle, each offspring inherits one end-structure, or pole, and develops a new one.
In the plasmodial tapetum, the young pollen mother cells
are in the centre of the anther locule, surrounded by tapetal cells which are in one or two layers.
In a cross section of the anther, microspore mother cells
(MMCs) of S.striata are angular in shape and possess a large nucleus with a darkly staining nucleolus (Fig.
The meiotic division in the MMC is synchronic with the microspore mother cells
In this primordium, an archeosporial cell produces a megaspore mother cell
, which undergoes meiosis, forming a linear tetrad.
The researchers point out that two daughter cells arise from a single sensory organ precursor mother cell
in the fly peripheral nervous system, and that among the daughter cells, Notch is activated in one and not in the other.
rectisetus parent (PI533028) were squashed in acetocarmine stain to study pollen mother cell
(PMC) meiosis (Liu et al., 1994).
During the cell division cycle, the mother cell
duplicates its chromosomes, generating two identical sets.
Reproductive modifications like apomixis, which involves the parthenogenetic development of apomeiotic eggs of unreduced embryo sacs that arise either from a somatic cell of the nucellus (apospory) or from a megaspore mother cell
(MMC) with modified (meiotic diplospory) or absent meiosis (mitotic diplospory) (Nogler, 1984), have the potential of preserving heterosis over generations (Jongedijk, 1991).