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...

    Lentic community
    Freshwater Communities & Lentic Waters

    Lentic or still water communities can vary greatly in appearance -- from a small temporary puddle to a large lake. The s..

    DNA - schematic
    Genetic Mutations

    This tutorial looks at the mutation at the gene level and the harm it may bring. Learn about single nucleotide polymorph..

    Protein (illustration)
    Protein Variety

    The sequence of amino acids determines the type of protein. Protein is synthesized according to the sequence of nucleoti..

    Transpiration
    Water in Plants

    The movement of molecules (specifically, water and solutes) is vital to the understanding of plant processes. This tuto..

    Lights' Effect on Growth
    Lights’ Effect on Growth

    This tutorial elaborates on the effect of light on plant growth. It describes how different plants require different amo..

    dinosaurs
    The Dinosaurs

    Dinosaurs represented a major turn in the evolutionary development of organisms on Earth. The first dinosaurs were presu..