| 释义 |
germ line
germ·line or germ line G5110350 (jûrm′līn′)n.1. The gamete-producing cells in a sexually reproducing organism, by means of which genetic material is passed on to subsequent generations.2. The collection or sequence of such cells in an individual and all its descendants.germ line n (Genetics) the lineage of cells culminating in the germ cells EncyclopediaSeegermlinegerm line
germ linea collection of haploid cells derived from the specialized cells of the primitive gonad.germ line (jĕrm līn) A collection of haploid cells derived from the specialized cells of the primitive gonad. germ line 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 line a 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).ThesaurusSeegerm |