Organism as a wholePutnam, 1916 - 379 pages |
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Page 72
... female cell - the egg - containing a large bulk of protoplasm ( the future embryo ) and reserve material ; and the male cell which in the case of the spermatozoon contains only nuclear material and no cytoplasmic material except that ...
... female cell - the egg - containing a large bulk of protoplasm ( the future embryo ) and reserve material ; and the male cell which in the case of the spermatozoon contains only nuclear material and no cytoplasmic material except that ...
Page 89
... females differ in their power of being fertilized by sperm of the same in- dividual while one hundred per cent . could usually be fertilized with sperm of a different individual . He ' Castle , W. E. , Bull . Mus . Comp . Zool ...
... females differ in their power of being fertilized by sperm of the same in- dividual while one hundred per cent . could usually be fertilized with sperm of a different individual . He ' Castle , W. E. , Bull . Mus . Comp . Zool ...
Page 102
... female sea urchin , however , did not give the reaction and not all the eggs even of sensitive females formed membranes . The writer found , how- ever , that it was possible to increase the susceptibility of the eggs against foreign ...
... female sea urchin , however , did not give the reaction and not all the eggs even of sensitive females formed membranes . The writer found , how- ever , that it was possible to increase the susceptibility of the eggs against foreign ...
Page 114
... females show this cell division before disintegration and that the cell division is preceded by an atypical form of membrane formation ; the eggs surrounding themselves by a fine gelatinous film comparable to that produced in the egg of ...
... females show this cell division before disintegration and that the cell division is preceded by an atypical form of membrane formation ; the eggs surrounding themselves by a fine gelatinous film comparable to that produced in the egg of ...
Page 186
... female are used , the process of the formation of mesenchyme cells comes to a standstill when their number in the normally fertilized eggs is half as large as the final number in the parthenogenetic egg . Boveri's results as well as ...
... female are used , the process of the formation of mesenchyme cells comes to a standstill when their number in the normally fertilized eggs is half as large as the final number in the parthenogenetic egg . Boveri's results as well as ...
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Common terms and phrases
agglutination animals annelids Arbacia Arch artificial membrane artificial parthenogenesis assumption bacteria Biol blastomeres blood body butyric acid cell division chapter characters chemical chromosome concentration contained cortical layer cytolysis definite determined digestion disintegration Driesch effect egg of purpuratus embryo enter the egg Entwcklngsmech enzyme existence experiments eyes f. d. ges fact female fertilized fish foreign species franciscanus frog Fundulus genus give rise graft groups grow growth heliotropic hemoglobin heredity hermaphroditic hybrids hypertonic solution idea induce Jour lack of oxygen large number larvæ latter light Lillie lipoids living matter Loeb male Mendelian heredity normal sea water nucleus observed ovaries oxidations parthenogenesis permeability phenomena phenomenon physicochemical Physiol pigment plants polyp positively heliotropic possible produced proteins protoplasm pure reaction regeneration result rôle salts sea urchin sea water sea-urchin egg segment serum shown sperm spermatozoön spermatozoön enters starfish Strongylocentrotus substances synthesis theory tion tissue transplanted unfertilized egg Wasteneys X chromosome