LAITY
发表于 2025-3-25 04:53:45
Species, Linneons, Genera and other „Higher Groups” and EvolutionThe problem of . is not, primarily, as is almost generally believed, the problem of the origin of species, but . INDIVIDUALS
郊外
发表于 2025-3-25 07:52:40
The Origin of Diploid SpeciesThe problem of the species and of its origin is, as was said in the preceding chapter, comparable to that of the pure chemical substance and to its origin.
Jubilation
发表于 2025-3-25 15:16:03
The Perpetuation of the New SpeciesAs every new individual is the result of the mating of two gametes, forming a zygote, and as a species originates either from one, or from a few of such zygotes, multiplication is necessary to perpetuate the species.
Ergots
发表于 2025-3-25 16:42:15
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郊外
发表于 2025-3-25 23:36:18
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muster
发表于 2025-3-26 00:15:56
The Limits of LinneonsThat Linneons are more or less distinctly limited, is apparent from the fact that in subdivising the living Kingdom, one made unconsciously halt at the border of each Linneon, and so was led to consider them as real species, such as Linnaeus believed them to be.
allergen
发表于 2025-3-26 08:04:04
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crutch
发表于 2025-3-26 09:47:39
Progression in EvolutionWe saw in the eighth chapter, that the production of new Linneons, usually called „species”, is generally designated as progressive evolution, and that this kind of evolution is considered by many . evolution par excellence.
使更活跃
发表于 2025-3-26 15:00:45
The Evidence for the Occurence of Crosses between Individuals Belonging to Different Linneons in NatCrossing of individuals belonging to different Linneons will be brought about by opportunity or by necessity.
悠然
发表于 2025-3-26 18:35:34
The Origin of the Great ClassesThe origin of the great classes of the vegetable and animal kingdom is a historical problem in which geology has the first word.