Dictionary > Dictyate

Dictyate

Definition
noun
A resting phase in mammalian oogenesis wherein the developing oocyte is arrested in prophase I of meiosis and would resume going through the rest of the stages of meiosis at puberty
Supplement
The dictyate refers to the resting phase in the oogenesis in certain mammals. Oogenesis is the formation and the development of an ovum. In mammals, it is comprised of a series of biological processes namely oocytogenesis, ootidogenesis, and ovum maturation. Oocytogenesis is the first stage wherein the oogonium divides mitotically to give rise to more oogonia. Each of these oogonia would develop and transform into primary oocyte that would enter meiotic division (particularly referred to as ootidogenesis). This process occurs during fetal stage. The development of primary oocytes, however, will be arrested at prophase I of the first meiotic division. In humans, the primary oocytes will rest at diplotene stage of prophase I. Diplotene is the late stage of prophase I and highlighted by homologous chromosome pairs that begin to separate and move away from one another except at chiasmata. The rest of the stages of meiosis will resume until puberty, particularly shortly before ovulation by the surge of luteinizing hormone.
Word origin: Ancient Greek díktuon (“net”) +‎ –ate
Also called:

  • dictyotene stage

See also:

  • oogenesis
  • diplotene
  • meiosis


    You will also like...

    Ecological Research Measuring & Analysis
    Ecological Research: Measuring & Analysis

    This lesson is about the methods used for ecological research, such as quadrat and transect sampling, canopy fogging, an..

    Nephrolepis exaltata
    Vascular Plants: Ferns and Relatives

    Ferns and their relatives are vascular plants, meaning they have xylem and phloem tissues. Because of the presence of va..

    Photosynthesis and respiration
    Plant Metabolism

    Plants are responsible for incredible feats of molecular transformation. Plant processes, such as photosynthesis, photop..

    sponge
    Primitive Animals

    Life, as we know it today, is presumed to have started in the sea and many of them were likely eukaryotic animal-like or..

    Cells in different stages of meiosis
    Meiosis – The Genetics of Reproduction

    Meiosis is a form of cell division that creates gametes. It is comprised of two divisions that in the end, the resulting..

    Body temperature regulation by the hypothalamus
    Temperature Regulation in Animals

    This tutorial elucidates body temperature regulation. Know the details here to learn how the body sets the body temperat..