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set germ

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  • Germ plasm — or polar plasm is a zone found in the cytoplasm of the egg cells of some model organisms (such as Caenorhabditis elegans , Drosophila melanogaster , Xenopus laevis ), which contains determinants that will give rise to the germ cell lineage. As… …   Wikipedia

  • Germ cell — Germ cells are progenitors of the gametes. These singled out cells move through the gut to the developing gonads and undergo mitotic proliferation followed by meiosis and differentiation into either eggs or sperm (mature gametes). Plants do not… …   Wikipedia

  • Germ (mathematics) — In mathematics, the notion of a germ of an object in/on a topological space captures the local properties of the object. In particular, the objects in question are mostly functions (or maps) and subsets. In specific implementations of this idea,… …   Wikipedia

  • Germ line development — The cells that give rise to the gametes are often set aside during cleavage. During development, these cells will differientate into primordial germ cells, migrate to the location of the gonad, and form the germ line of the animal. Creation of… …   Wikipedia

  • Germ cell — The eggs and sperm are the germ cells: the reproductive cells. Each mature germ cell is haploid in that it has a single set of 23 chromosomes containing half the usual amount of DNA and half the usual number of genes. Except for the eggs and… …   Medical dictionary

  • germ cell — noun a spermatozoon or an ovum; a cell responsible for transmitting DNA to the next generation • Syn: ↑reproductive cell, ↑sex cell • Hypernyms: ↑cell • Hyponyms: ↑gamete • Part Holonyms: ↑ …   Useful english dictionary

  • germ plasm — Chromatin Chro ma*tin, n. (Biol.) The deeply staining substance of the nucleus and chromosomes of eukaryotic cells, composed of DNA and basic proteins (such as histones), the DNA of which comprises the predominant physical basis of inheritance.… …   The Collaborative International Dictionary of English

  • germ layers — The main divisions of tissue types in multicellular organisms. Diploblastic organisms (eg. coelenterates) have two layers, ectoderm and endoderm; triploblastic organisms (all higher animal groups) have mesoderm between these two layers. Germ… …   Dictionary of molecular biology

  • germ line — A lineage of cells which, during the development of an organism, are set aside as potential gamete forming tissues. The location, nature and time of formation of potential gamete forming tissues are species specific, and may vary greatly from one …   Glossary of Biotechnology

  • Map germ — Here we define the mathematical concept of a map germ. Given the set of all maps from one manifold to another we can collect maps together under an equivalence relation. These equivalence classes are called map germs.Consider two manifolds M and… …   Wikipedia

  • Cells, germ — The eggs and sperm are the germ cells: the reproductive cells. Each mature germ cell is haploid in that it has a single set of 23 chromosomes containing half the usual amount of DNA and half the usual number of genes. Except for the eggs and… …   Medical dictionary

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