| American Association for the Advancement of Science - 1877 - 912 páginas
...made up of plastidules which seems to be as incongruous. I will add here — although it is in answer rather to Mr. Lankester than to Prof. Haeckel —...gemmules of each separate part were not originally pro-formed, but are continually produced at all ages during each generation, with some handed down... | |
| 1869 - 654 páginas
...forms the basis of Mr. Darwin's hypothesis of Pangenesis. He supposes the development of these gemmules to 'depend on their union with other partially developed...which precede them in the regular course of growth,' — that they may lie dormant in the organism during one or more generations, and that in their dormant... | |
| Sir Edwin Ray Lankester - 1870 - 196 páginas
...which they were derived. They are supposed to be transmitted from the parents to the offspring, and are generally developed in the generation which immediately...which precede them in the regular course of growth.' ' Gemmules are supposed to be thrown off by every cell or unit, not only during the adult state, but... | |
| Charles Robert Bree - 1872 - 534 páginas
...granules he calls • gemmules,' and he supposes that they are transmitted from parent to offspring, and are generally developed in the generation which immediately...which ' precede them in the regular course of growth.' As it affects inheritance, Mr. Darwin applies the hypothesis thus. He takes Hakel's (the Professor... | |
| Royal Microscopical Society (Great Britain) - 1876 - 350 páginas
...established, simply gemmules. They are supposed to be transmitted from the parents to their offspring, and are generally developed in the generation which immediately...which precede them in the regular course of growth. Gemmules are supposed to be thrown off by every cell or unit, not only during the adult state, but... | |
| 1876 - 536 páginas
...supposed to be tr, mitted from the parents to their offspring, and are generally NOTES AND MEMORANDA. developed in the generation which immediately succeeds,...which precede them in the regular course of growth." He nowhere gives any opinion as to the actual size of gemmules, or the number present in particular... | |
| American Association for the Advancement of Science - 1877 - 442 páginas
...incongruous. I will add here — although it is in answer rather to Mr. Lankester than to Prof. HiBckel — that Mr. Darwin's view of "the retention of free and...separate part were not originally pre-formed, but arc continually produced at all ages during each generation, with some handed down from preceding generations."... | |
| Ernst Heinrich P.A. Haeckel - 1883 - 384 páginas
...established, simply gemmules. They are supposed to be transmitted from the parents to the offspring, and are generally developed in the generation which immediately...which precede them in the regular course of growth. Why I use the term union will be seen when we discuss the direct action of pollen on the tissues of... | |
| William Keith Brooks - 1883 - 358 páginas
...distinctness, may be called gemmules. They are supposed to be transmitted from the parent to the offspring, and are generally developed in the generation which immediately...cells or gemmules, which precede them in the regular order of growth. Why I use the term union will be seen when we discuss the direct action of pollen... | |
| Egbert Coffin Smyth - 1884 - 720 páginas
...like those from which they were derived. . . . They are supposed to be transmitted from the parent to the offspring, are generally developed in the generation...during many generations, and are then developed." They have a mutual affinity for each other, leading to their aggregation, like combining with like... | |
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