On the Origin of Species by Means of Natural Selection |
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Page 6
... parent - Explains the Grouping of all organic beings , CHAPTER V. LAWS OF VARIATION . 77 Effects of external conditions - Use and disuse , combined with natural selection organs of flight and of vision - Acclimatisation - Correlation of ...
... parent - Explains the Grouping of all organic beings , CHAPTER V. LAWS OF VARIATION . 77 Effects of external conditions - Use and disuse , combined with natural selection organs of flight and of vision - Acclimatisation - Correlation of ...
Page 14
... parent - species have been exposed under nature . There is , also , I think , some probability in the view pro- pounded by Andrew Knight , that this variability may be partly connected with excess of food . It seems pretty clear that ...
... parent - species have been exposed under nature . There is , also , I think , some probability in the view pro- pounded by Andrew Knight , that this variability may be partly connected with excess of food . It seems pretty clear that ...
Page 16
... parent has affected a bud or offset , and not the ovules or pollen . But it is the opinion of most physiologists that there is no essential difference between a bud and an ovule in their earliest stages of for- mation ; so that , in ...
... parent has affected a bud or offset , and not the ovules or pollen . But it is the opinion of most physiologists that there is no essential difference between a bud and an ovule in their earliest stages of for- mation ; so that , in ...
Page 17
Charles Darwin. though both the young and the parents , as Müller has re- marked , have apparently been exposed to exactly the ... parent . The great and in- herited development of the udders in cows and goats in countries where they are ...
Charles Darwin. though both the young and the parents , as Müller has re- marked , have apparently been exposed to exactly the ... parent . The great and in- herited development of the udders in cows and goats in countries where they are ...
Page 19
... parent - say , once amongst several million individuals - and it reappears in the child , the mere doctrine of chances almost compels us to attribute its reappearance to inheritance . Every one must have heard of cases of albinism ...
... parent - say , once amongst several million individuals - and it reappears in the child , the mere doctrine of chances almost compels us to attribute its reappearance to inheritance . Every one must have heard of cases of albinism ...
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Common terms and phrases
accumulated adapted affinities allied species America amount ancient animals appear become bees believe birds breeds cause cells characters cirripedes climate closely allied colour continuous crossed crustaceans degree difficulty distinct species divergence domestic doubt embryo endemic Europe existing exterminated extinct extremely facts favourable fertility flowers formations forms fossil Gärtner genera genus geological geological period Glacial period gradations greater number groups of species habits Hence hermaphrodites hybrids hybrids produced important individuals inhabitants inherited insects instance instincts intercrossing intermediate land larvæ laws less living look male mammals manner migration modification modified descendants natural selection naturalists nearly nest offspring organic organisation perfect pigeons pistil plants pollen present principle probably produced progenitor ranked reciprocal crosses remarked resemble rudimentary seeds sexual selection Silurian slight South America sterility structure struggle successive suppose swimbladder tend theory tion trees variability variation varieties vary whole widely