id	author	title	date	pages	extension	mime	words	sentences	flesch	summary	cache	txt
37385	Leighton, Gerald R. (Gerald Rowley)	Embryology: The Beginnings of Life			.txt	text/plain	21612	945	63	grasp these simple facts of cell life in their bearing upon development cell is termed, in animal Embryology, the "fertilised ovum." It is fertilised ovum there are produced first of all germ-cells to secure the gave rise to the cells which ultimately produced an embryo. resemble parents and ancestors is because the germ-cells which give rise [Illustration: Diagram to show the origin of germ-cells and the embryo.] body-cells, and so produces the new individual, which as it grows continuity by successive generations of germ-cells from time immemorial. different lines of descent of the male and female germ-cells may well be the fact that human germ-cells have been subject to the hostile germ-cell, the rest of these products forming the other body tissues. embryo, and no individual, ever made germ-cells; the latter existed constitutes the environment of an embryo that the mass of body-cells developing embryo, and take no part in the actual formation of its cells	./cache/37385.txt	./txt/37385.txt