On the Origin of Species by Means of Natural Selection: Or, The Preservation of Favoured Races in the Struggle for LifeEaston Press, 1976 - 470 páginas |
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Página 156
... similar organs , as far as function is concerned , in distinct organic beings , which owe none of their structure in common to inheritance from a common progenitor . Fritz Müller , in order to test the conclusions arrived at in this ...
... similar organs , as far as function is concerned , in distinct organic beings , which owe none of their structure in common to inheritance from a common progenitor . Fritz Müller , in order to test the conclusions arrived at in this ...
Página 387
... similar instances ; thus Linnæus , misled by external appearances , actually classed an homopterous insect as a moth . We see something of the same kind even with our domestic varieties , as in the strikingly similar shape of the body ...
... similar instances ; thus Linnæus , misled by external appearances , actually classed an homopterous insect as a moth . We see something of the same kind even with our domestic varieties , as in the strikingly similar shape of the body ...
Página 389
... similar exciting causes in a similar manner ; and this would obviously aid in the acquirement through natural selection of parts or organs , strikingly like each other , independently of their direct inheritance from a common progenitor ...
... similar exciting causes in a similar manner ; and this would obviously aid in the acquirement through natural selection of parts or organs , strikingly like each other , independently of their direct inheritance from a common progenitor ...
Contenido
VARIATION UNDER NATURE | 30 |
STRUGGLE FOR EXISTENCE | 45 |
NATURAL SELECTION | 59 |
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Términos y frases comunes
accumulated adapted admit affinities allied species America ancient appear beak become bees believe belonging birds breeds cause cells characters climate closely allied colour common progenitor continuous crossed crustaceans degree developed difficulty distinct species divergence doubt effects eggs embryo existing exterminated extinct extremely facts favourable fertilised fertility flowers formation forms fossil Fritz Müller genera genus geological geological period gradations greater number groups of species habits Hence hybrids hybrids produced important increase individuals inhabitants inherited insects instance instincts intercrossing intermediate kind lamellæ larvæ less living male mammals manner marsupials migration modified descendants natural selection naturalists nearly nest occasionally offspring organisation organs Origin of Species parent peculiar perfect pigeons pistil plants pollen present preserved principle probably produced quadrupeds ranked reciprocal crosses remarked resemblance rudimentary seeds slight South America stamens sterility structure struggle successive supposed swimbladder theory variability variations varieties vary whilst whole wings young