| germ plasm | The liquid portion of a gamete (egg or sperm) that contains genetic material. (09 Oct 1997) |
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| Weismann germ plasm theory | <genetics> The theory that organisms maintain genetic continuity from organism to offspring through the germ line cells (germ plasm) and that the other (somatic) cells play no part in the transmission of heritable factors. (18 Nov 1997) |
| plasm | 1. A mold or matrix in which anything is cast or formed to a particular shape. 2. <biology> Same as Plasma. Origin: L. Plasma anything formed or molded, that which is molded, Gr, from to form, mold: cf. F. Plasme. Cf. Plasma. Source: Websters Dictionary (01 Mar 1998) |
| polar plasm | <cell biology, embryology> Differentiated cytoplasm associated with the animal or vegetal pole of an oocyte, egg or early embryo. (18 Nov 1997) |