On the Origin of Species by Means of Natural Selection, Or, The Preservation of Favoured Races in the Struggle for Life |
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Page 298
... modification and im- provement ; and thus they will become still further victorious and will produce groups of modified descendants . On this principle of inheritance with modification we can under- stand how it is that sections of ...
... modification and im- provement ; and thus they will become still further victorious and will produce groups of modified descendants . On this principle of inheritance with modification we can under- stand how it is that sections of ...
Page 379
... modification , adapted in one descendant to act as hands , in another as paddles , in another as wings ; and on the above two principles - namely , of each successive modification supervening at a rather late age , and being inherited ...
... modification , adapted in one descendant to act as hands , in another as paddles , in another as wings ; and on the above two principles - namely , of each successive modification supervening at a rather late age , and being inherited ...
Page 395
... modification our domestic productions have undergone ; but we may safely infer that the amount has been large , and that modifications can be inherited for long periods . As long as the conditions of life remain the same , we have ...
... modification our domestic productions have undergone ; but we may safely infer that the amount has been large , and that modifications can be inherited for long periods . As long as the conditions of life remain the same , we have ...
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Common terms and phrases
accumulated adapted affinities allied species amount analogous ancient animals appear archipelago become bees believe birds breeds cause cells characters cirripedes climate closely allied colour common parent continuous crossed crustaceans degree difficulty distant distinct species divergence domestic doubt eggs embryo endemic Europe existing exterminated extinct extremely facts favourable fertility flower formations forms fossil Gärtner genera genus geological geological period Glacial period gradations greater number groups of species habits Hence hermaphrodites hybrids hybrids produced important increase in number individuals inhabitants inherited insects instance instincts intercrossing land larvæ less living male mammals manner migration modification modified descendants natural selection naturalists nearly nest occasionally oceanic islands offspring perfect pigeons pistil plants pollen present probably produced progenitor ranked reciprocal crosses remarked resemblance seeds sexual selection Silurian slight South America sterility structure struggle successive suppose swimbladder theory tion trees variability variations vary whole widely