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 v
... VARIATION UNDER DOMESTICATION . Causes of Variability - Effects of Habit and the use or disuse of Parts - Correlated Variation - Inheritance - Character of Do- mestic Varieties - Difficulty of distinguishing between Varieties and ...
... VARIATION UNDER DOMESTICATION . Causes of Variability - Effects of Habit and the use or disuse of Parts - Correlated Variation - Inheritance - Character of Do- mestic Varieties - Difficulty of distinguishing between Varieties and ...
Page 4
... variation under domes- tication , afforded the best and safest clue . I may venture to express my conviction of the ... variations . I will then pass on to the variability of species in a state of nature ; but I shall , unfortunately ...
... variation under domes- tication , afforded the best and safest clue . I may venture to express my conviction of the ... variations . I will then pass on to the variability of species in a state of nature ; but I shall , unfortunately ...
Page 7
... VARIATION UNDER DOMESTICATION . Causes of Variability - Effects of Habit and the use or disuse of Parts - Correlated Variation - Inheritance - Character of Do- mestic Varieties - Difficulty of distinguishing between Varieties and ...
... VARIATION UNDER DOMESTICATION . Causes of Variability - Effects of Habit and the use or disuse of Parts - Correlated Variation - Inheritance - Character of Do- mestic Varieties - Difficulty of distinguishing between Varieties and ...
Page 8
... variation ; and that , when the organisation has once begun to vary , it generally continues varying for many generations ... variations arise under conditions which appear to be nearly uniform . The effects on the offspring are either ...
... variation ; and that , when the organisation has once begun to vary , it generally continues varying for many generations ... variations arise under conditions which appear to be nearly uniform . The effects on the offspring are either ...
Page 9
... variations which we see in the plumage of our fowls must have had some efficient cause ; and if the same cause were to act uniformly during a long series of gen- erations on many individuals , all probably would be modified in the same ...
... variations which we see in the plumage of our fowls must have had some efficient cause ; and if the same cause were to act uniformly during a long series of gen- erations on many individuals , all probably would be modified in the same ...
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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