id	author	title	date	pages	extension	mime	words	sentences	flesch	summary	cache	txt
37221	Hertwig, Oscar	The Biological Problem of To-day: Preformation Or Epigenesis? The Basis of a Theory of Organic Development			.txt	text/plain	40527	1941	56	In the course of a series of divisions the eight cells come to form finally, each different kind of cell in the whole body contains a specific first cleavage of the egg-cell become different, so that the one contains these organs--determined by the number of cells composing them--depend upon 'cannot _become_ different in the cells of the fully formed organism; the otherwise the different products of the division of the egg-cell could not masses of cells which grow into organs of definite form and of complex body cell-groups, which may give rise to complex organs in unnatural single-celled organisms exhibit only doubling division, as by that alone development nor upon the characters of the cells (fixed germplasm, represent characters of the adult due to groups of cells and organisms, he influences, as determined by the whole organism, and only by the cell Both cases--the course of the development of the egg-cell into a man, and	./cache/37221.txt	./txt/37221.txt