The callose was deposited in the pollen
mother cells at the onset of meiosis, reached a peak at metaphase II or anaphase II by enveloping the pollen
mother cells or microtetrads (Fig.
In the invasive tapetum (sensu Tiwari & Gunning, 1986a), the pollen
mother cells are in the centre of the anther locule surrounded by layers of tapetal cells, several cells thick, as shown in Costus and Globba [ILLUSTRATION FOR FIGURES 18, 19, 32, 33 OMITTED].
Microspores and pollen grains are produced from microspore
mother cells (Microsporocytes), MMCs within loculus anthers (pollen sacs) of the flower.
It is larger and differentiated from the neighboring cells and then become the megaspore
mother cell (mc).
The differential activation of signalling leads to two different kinds of cells which arise from the same
mother cell, a reason why the researchers used the fruit flies sensory organ precursor cell division as a model to understand how Notch signalling is activated during asymmetric cell division.
Abbreviations: MMC, megaspore
mother cell; PMC, pollen
mother cell.
Abbreviations: MMC, megaspore
mother cell; SDR, second division restitution; FDR, first division restitution; 2nP, 2n pollen mutant; RAPD, random amplified polymorphic DNA; RFLP, restriction fragment length polymorphism.
Multicellularity might be achieved by allowing the
mother cell to retain control over the daughter cell it creates.
Importantly, the work showed that when these stem cells are activated, they send signals back to the
mother cells of the tissue to control the number of cells produced, through a molecular gene called Dlk1.
When these stem cells are activated, they then send signals back to the
mother cells of the tissue to control the number of cells produced, through a molecular gene called Dlk1.
The subsequent meiotic analysis was conducted in Meiotic-I (MI) of pollen
mother cells (PMC) of B.
Stem cells gathered from mouse embryos and plunged into a bath of chemicals turn into sperm
mother cells known as a primordial germ cells.