Organism as a wholePutnam, 1916 - 379 pages |
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Page 34
... surface and any seeds on it would therefore be deprived of their germinating power . " • Arrhenius suggests another and much more ingenious idea based on the fact that for particles below a certain size the mechanical pressure produced ...
... surface and any seeds on it would therefore be deprived of their germinating power . " • Arrhenius suggests another and much more ingenious idea based on the fact that for particles below a certain size the mechanical pressure produced ...
Page 74
... surface tension forces and agglutination have been suggested ; both are surface phenomena and are rapidly reversible . We should then say that the specificity in the process of fertilization consists in a peculiarity of the surface of ...
... surface tension forces and agglutination have been suggested ; both are surface phenomena and are rapidly reversible . We should then say that the specificity in the process of fertilization consists in a peculiarity of the surface of ...
Page 79
... surface of the egg , inasmuch as a reaction product of the two types of sperm is formed after some time which alters the sur- face of the egg and thereby prevents the sperm from entering . This view is supported not only by all the ...
... surface of the egg , inasmuch as a reaction product of the two types of sperm is formed after some time which alters the sur- face of the egg and thereby prevents the sperm from entering . This view is supported not only by all the ...
Page 80
... surface of the egg and agglutinate and that later forces of a different character bring the spermatozoon into the egg . The fact that under normal conditions a very slight degree of motility on the part of the spermatozoōn allows it to ...
... surface of the egg and agglutinate and that later forces of a different character bring the spermatozoon into the egg . The fact that under normal conditions a very slight degree of motility on the part of the spermatozoōn allows it to ...
Page 84
... surface of the spermatozoön whereby the latter becomes slightly sticky . This precipitate is slowly soluble in sea water and the more rapidly the more alkaline ( within certain limits ) . Only when the spermatozoa run against each other ...
... surface of the spermatozoön whereby the latter becomes slightly sticky . This precipitate is slowly soluble in sea water and the more rapidly the more alkaline ( within certain limits ) . Only when the spermatozoa run against each other ...
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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