The Origin of Species by Means of Natural Selection: Or the Preservation of Favored Races in the Struggle for Life |
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Page 5
... sometimes varying conditions of life , will have a better chance of surviving , and thus be naturally selected . From the strong principle of inheri- tance , any selected variety will tend to propagate its new and modified form . This ...
... sometimes varying conditions of life , will have a better chance of surviving , and thus be naturally selected . From the strong principle of inheri- tance , any selected variety will tend to propagate its new and modified form . This ...
Page 8
... sometimes arise under , as far as we can judge , dissimilar conditions ; and , on the other hand , dissimilar variations arise under conditions which appear to be nearly uniform . The effects on the offspring are either definite or ...
... sometimes arise under , as far as we can judge , dissimilar conditions ; and , on the other hand , dissimilar variations arise under conditions which appear to be nearly uniform . The effects on the offspring are either definite or ...
Page 11
... have suddenly produced a single bud with a new and sometimes widely different character from that of the other buds on the same plant . These bud variations , as they may CHAP . I. ] VARIATION UNDER DOMESTICATION . 11.
... have suddenly produced a single bud with a new and sometimes widely different character from that of the other buds on the same plant . These bud variations , as they may CHAP . I. ] VARIATION UNDER DOMESTICATION . 11.
Page 12
... sometimes by seed . They occur rarely under nature , but are far from rare under culture . As a single bud out of the many thousands , produced year after year on the same tree under uniform conditions , has been known suddenly to ...
... sometimes by seed . They occur rarely under nature , but are far from rare under culture . As a single bud out of the many thousands , produced year after year on the same tree under uniform conditions , has been known suddenly to ...
Page 15
... sometimes inherited and sometimes not so ; why the child often reverts in certain characters to its grandfather or grandmother or more remote an- cestor ; why a peculiarity is often transmitted from one sex to both sexes , or to one sex ...
... sometimes inherited and sometimes not so ; why the child often reverts in certain characters to its grandfather or grandmother or more remote an- cestor ; why a peculiarity is often transmitted from one sex to both sexes , or to one sex ...
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Common terms and phrases
adapted affinities allied species America ancient appear Asa Gray beak become bees believe belonging birds breeds cause cells characters climate closely allied colour common continent crossed crustaceans degree developed difficulty distinct species domestic doubt effects eggs embryo existing extinct extremely facts favourable fertilised fertility flowers formation forms fossil Fritz Müller genera genus geological geological period Glacial period gradations greater number groups of species habits Hence hybrids important individuals inhabitants inherited insects instance instincts intercrossing intermediate kind lamellę larvę less living males mammals manner marsupials migration modified descendants natural selection naturalists nearly nest occasionally offspring organisation organs parent peculiar perfect pigeon pistil pollen present principle probably produced progenitor quadrupeds ranked remarked resemblance rudimentary seeds sexual selection Silurian slight South America stamens sterility structure successive supposed swimbladder tend theory tion trees variability variations varieties vary whilst whole wings young