. The cell in development and inheritance. Cells. UXION OF THE GERM-CELLS 199 "merocytes" or accessory nuclei. The fate of the latter is still in doubt; but they certainly take no part in fertilization. It is an interesting question how the entrance of supernumerary spermatozoa is prevented in normal monospermic fertilization. In the case of echinoderm-eggs Fol advanced the view that this is mechanically effected by means of the vitelline membrane formed instantly after the first spermatozoon touches the , This is indi- cated by the following facts. Immature eggs, before the form
. The cell in development and inheritance. Cells. UXION OF THE GERM-CELLS 199 "merocytes" or accessory nuclei. The fate of the latter is still in doubt; but they certainly take no part in fertilization. It is an interesting question how the entrance of supernumerary spermatozoa is prevented in normal monospermic fertilization. In the case of echinoderm-eggs Fol advanced the view that this is mechanically effected by means of the vitelline membrane formed instantly after the first spermatozoon touches the , This is indi- cated by the following facts. Immature eggs, before the formation. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Wilson, Edmund B. (Edmund Beecher), 1856-1939. New York Macmillan
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectcells, bookyear1906
