germ line(redirected from germ lines)
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a collection of haploid cells derived from the specialized cells of the primitive gonad.
genetic material in a cell lineage that is passed down through the gametes before it is modified by somatic recombination or maturation.
germ line(jĕrm līn)
A collection of haploid cells derived from the specialized cells of the primitive gonad.
1. The lineage of cells leading to the contemporary GERM CELLS.
2. Often used loosely to refer to the cells of the ovary and testes that give rise, respectively, to the ova and spermatozoa, and to the ova and spermatozoa themselves.
germ linea group of cells that give rise to the GONADS, becoming differentiated from the ‘somatic’ cells early in embryonic development. Only germ-line cells have the potential to undergo MEIOSIS, and a MUTATION event in these cells may well be transmitted to the offspring, unlike genetic change in somatic cells (see SOMATIC MUTATION).
1. old-fashioned and lay term for a pathogenic microorganism.
2. living substance capable of developing into an organ, part or organism as a whole; a primordium. Commonly used to refer to the embryos of wheat grains which are removed during milling and sold separately as wheat germ.
direct descendants of the primordial cells which originate from the yolk sac endoderm and migrate to the gonadal ridges of the embryo, where they give rise to either ova or spermatozoa. Called also gonocytes, sex cells.
germ cell tumor
a rare tumor in dogs, similar to more common lesions in humans. Similar to pituitary adenomas in distribution and cellular characteristics.
the genetic material as it is transferred via the gametes, before being modified by somatic recombination or mutation.
germ line cells
germ line transmission
a mode of transmission, particularly of retroviruses, whereby the genome of the virus is integrated into the chromosomal DNA and transmitted via gametes to offspring.
germ plasma evaluation program
a planned investigative, large scale breeding program aimed at accumulating comparative information on the relative performance of various breeds and crossbreeds of agricultural animals.
1. all organisms are developed from a cell.
2. infectious diseases are of microbial origin.
a tube-like structure that develops during the growth of some fungi and becomes a hypha; a feature of the yeast, Candida albicans.
see wheat germ.