 | 1919 - 580 頁
...proved (Ic, 2:13). Darwin recognized, as did most of the breeders before Mendel, that As a general rule, crossed offspring in the first generation are...lesser degree, to one or both of their progenitors (Ic, 2:22). From cases of intermediacy, Darwin proceeds to discuss what we should call cases of dominance,... | |
 | 1868 - 602 頁
...presents the characters proper to either pure parent form. "As a general rule," Mr. Darwin informs us, " crossed offspring in the first generation are nearly...succeeding generations continually revert, in a greater or less degree, to one or both of their progenitors." This influence of crossing in leading to reversion... | |
 | 1868 - 608 頁
...presents the characters proper to either pure parent form. "As a general rule," Mr. Darwin informs us, " crossed offspring in the first generation are nearly...succeeding generations continually revert, in a greater or less degree, to one or both of their progenitors." This influence of crossing in leading to reversion... | |
 | 1868 - 1192 頁
...presents the characters proper to either pure parent form. "As a general rule," Mr. Darwin informs us, " crossed offspring in the first generation are nearly...succeeding generations continually revert, in a greater or less degree, to one or both of their progenitors." This influence of crossing in leading to reversion... | |
 | 1871 - 758 頁
...to the color either of the aboriginal parent species, or of some ancient and half wild parent breed. offspring in the first generation are nearly intermediate...and succeeding generations continually revert, in greater or less degree, to one or both of their progenitors." " With cross breeds, the act of crossing... | |
 | Massachusetts. State Board of Agriculture - 1874 - 652 頁
...parent species, or of some ancient and half-wild parent breed. The same author writes : "As a general, rule, crossed offspring in the first generation are...and succeeding generations continually revert, in greater or less degree, to one or both of their progenitors." "With cross-breeds, the act of crossing... | |
 | Charles Darwin - 1890 - 532 頁
...the offspring from a cross, namely, to the characters proper to either pure parent-form. As a general rule, crossed offspring in the first generation are...proportions in different parts of the body ; or, as Naudin 60 has expressed it, a hybrid is a living mosaic-work, in which the eye cannot distinguish the discordant... | |
 | Charles Darwin - 1892 - 558 頁
...reversion is far commoner, indeed is almost universal with the offspring from a cross; namely, . to tho characters proper to either pure parent-form. As a...merely mingled in different proportions in different parte of the body ; or, as Naudin :'° has expressed it, a hybrid is a living mosaic-work, in which... | |
 | United States. Bureau of Animal Industry - 1892 - 1192 頁
...the crossed offspring are opposed. • * • As a general rule, crossed offspring in the generations are nearly intermediate between their parents, but...lesser degree, to one or both of their progenitors. In the inception and development of the improved Kentucky sheep. Col. Scott did not limit himself to... | |
 | 1919 - 610 頁
...proved (Ic, 2:13). Darwin recognized, as did most of the breeders before Mendel, that As a general rule, crossed offspring in the first generation are...lesser degree, to one or both of their progenitors (Ic, 2:22). From cases of intermediacy, Darwin proceeds to discuss what we should call cases of dominance,... | |
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As a general rule, crossed offspring in the first generation are nearly intermediate between their parents, but the grandchildren and succeeding generations continually revert, in a greater or lesser degree, to one or both of their progenitors. 
