 The result was that in many instances the offspring failed to breed; in others they produced few that lived; and of the latter many were idiotic, without sense, even to suck, and when attempting to move could not walk straight.  The Journal of Heredity - 第 230 頁1914完整檢視 - 關於此書
 | Alfred Henry Huth - 1875 - 484 頁
...great-granddaughter, and so on for seven generations; with the result that the offspring in many cases failed to breed, in others they produced few that...lived, and of the latter many were idiotic, without instinct to suck, and unable to walk straight. The last two sows were put to other boars, and produced... | |
 | Charles Darwin - 1876 - 544 頁
...Mr. J.Wright, well known as a breeder, crossed 2' the same boar with the daughter, granddaughter, and great-granddaughter, -and so on for seven generations....straight. Now it deserves especial notice, that the two lust ROWS produced by this long course of interbreeding were sent to other boars, and they bore several... | |
 | 1896 - 606 頁
...seven generations; the number of pigs was reduced at each gestation, and of the offspring thus produced many were idiotic, without sense even to suck, and when attempting to move could not walk straight, until finally one sow was the sole offspring; she would not become pregnant by her sire, while to a... | |
 | T Warren O'Neill - 1880 - 482 頁
...Mr. J. Wright, well known as a breeder, crossed the same boar with the daughter, granddaughter, and great-granddaughter, and so on, for seven generations....straight. Now, it deserves especial notice, that the two best sows produced by this long course of interbreeding, were sent to other boars, and they bore several... | |
 | Albert Carey - 1880 - 222 頁
...authority * states that by strictly breeding in-and-in with pigs, the seventh generation in many instances failed to breed; in others they produced few that...and when attempting to move could not walk straight. Bates's herd of Shorthorn cattle was esteemed the most celebrated in the world, and though he had the... | |
 | 1883 - 540 頁
...grand-daughter, great grand-daughter, and so on for seven generations. The result was that in many cases the offspring failed to breed ; in others they produced...many were idiotic, without sense even to suck, and could not walk straight." That this result was due to inbreeding, and to no other cause, is seen from... | |
 | Charles Darwin - 1887 - 528 頁
...so on for seven generations. The result was, that in many instances the offspring failed to brc-ed; in others they produced few that lived; and of the...of interbreeding were sent to other boars, and they lx>re several litters of healthy pigs. Tho best sow in external appearance produced during the whole... | |
 | Charles Darwin - 1892 - 558 頁
...in many instances tho offspring failed to breed; in others they produced few that lived; and of tho latter many were idiotic, without sense, even to suck,...could not walk straight. Now it deserves especial nolico, that tho two last sows produced by this long course of interbreeding were sent to other boars,... | |
 | 1896 - 764 頁
...generations ; the number of pigs was reduced at each gestation, and of the offspring thus produced many were idiotic, without sense even to suck, and when attempting to move could not walk straight, until finally one sow was the sole offspring ; she would not become pregnant by her sire, while to... | |
 | 1896 - 610 頁
...seven generations; the number of pigs was reduced at each gestation, and of the offspring thus produced many were idiotic, without sense even to suck, and. when attempting to move could not walk straight, until finallyone sow was the sole offspring; she would not become pregnant by her sire, while to a... | |
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