 | 1875 - 666 стор.
...bodies have not so far been satisfactorily observed." Further he says: — "The function of forming polar cells has been acquired by the ovum for the...express purpose of preventing parthenogenesis."* This notion, which has been somewhat modified by various authors, and is refused by Carnoy as an explanation,... | |
 | Sir Norman Lockyer - 1886 - 666 стор.
...use of to explain the occurrence of parthenogenesis. Balfour suggested " that the function of forming polar cells has been acquired by the ovum for the express purpose of preventing parthenogenesis." Weismann naturally cannot agree with this view, since he regards the extrusion of polar bodies merely... | |
 | Francis Maitland Balfour - 1880 - 536 стор.
...the function of the polar cells, I will venture to add the further one, t)iat the function of forming polar cells has been acquired by the ovum for the express purpose of preventing partltettoytinegig. The explanation given by Mr Darwin of the evil effects of self-fertilization, viz.... | |
 | Francis Maitland Balfour - 1885 - 646 стор.
...the function of the polar cells, I will venture to add the further one, that the function of forming polar cells has been acquired by the ovum for the express purpose of preventing parthenogenesis. The explanation given by Mr Darwin of the evil effects of self-fertilization, viz. the want of sufficient... | |
 | Sir Norman Lockyer - 1886 - 884 стор.
...use of to explain the occurrence of parthenogenesis. Balfour suggested " that the function of forming polar cells has been acquired by the ovum for the express purpose of preventing parthenogenesis." Weismann naturally cannot agree with this view, since he regards the extrusion of polar bodies merely... | |
 | Royal Philosophical Society of Glasgow - 1888 - 532 стор.
...bodies have not so far been satisfactorily observed." Further he says: — -"The function of forming polar cells has been acquired by the ovum for the...express purpose of preventing parthenogenesis.'"* This notion, which has been somewhat modified by various authors, and is refused by Carnoy as an explanation,... | |
 | John Gray McKendrick - 1888 - 560 стор.
...bodies have not so far been -satisfactorily observed." Further, he says, " The function of forming polar cells has been acquired by the ovum for the express purpose of preventing parthenogenesis." 2 1 Strasburger, Xetie Untermtchungen iiber den Befruchlunij»i:or(j<nirj l>ei den Phanfroyamrn als... | |
 | American Philosophical Society - 1889 - 560 стор.
...reference to the polar bodies in his " Comparative Embryology " (i, p. 63), when he says "that the function of forming the polar cells has been acquired by the...This implies that the egg possesses foresight of harm coining to it through falling into a parthenogenetic habit ! And when Weismann proceeds to elaborate... | |
 | Sir Patrick Geddes, John Arthur Thomson - 1889 - 366 стор.
...begin with Balfour's view of the case, though that of Minot has the priority. " The function of forming polar cells has been acquired by the ovum for the express purpose of preventing parthenogenesis." If they were not formed, parthenogenesis would normally occur. This is expressed in curiously teleological... | |
 | American Philosophical Society - 1890 - 334 стор.
...reference to the polar bodies in his "Comparative Embryo'ogy " (', P- 63), when he says "that the function of forming the polar cells has been acquired by the...controlling the dimensions of cells and their proportions of chromatin and cytoplasm. The same difficulty was perceived in a somewhat different form and very pointedly... | |
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This implies that the egg possesses foresight of harm coming to it through falling into a parthenogenetic habit ! And when Weismann proceeds to elaborate his necessary hypothesis of a reduction of ancestral germ-plasmas, and says "this must be so," he... 
