human
Moreover, from the outset the progenitor of the germ-cells _differs from the somatic cells not only in the greater size and richness of the chromatin of its nucleus, but also in its mode of mitosis_ (_division_), for in all those blastomeres (segmentation-cells) destined to produce somatic cells a portion of the chromatin is cast out into the cytoplasm, where it degenerates, and _only in the germ-cells is the sum-total of the chromatin retained_
gpt
In every development a portion of this specific germ-plasm, which the parental ovum contains, is unused in the upbuilding of the offspring's body, and is reserved unchanged to form the germ-cells of the next generation.... The germ-cells no longer appear as products of the body, at least not in their more essential part--the specific germ-plasm; they appear rather as something opposed to the sum-total of body-cells; and the germ-cells of successive generations are related to one another like generations of Protozoa.