On the Origin of Species by Means of Natural Selection |
From inside the book
Results 1-5 of 72
Page 12
... sometimes varying con ditions of life , will have a better chance of surviving , ano thus be naturally selected . From the strong principle of inheritance , any selected variety will tend to propagat its new and modified form . This ...
... sometimes varying con ditions of life , will have a better chance of surviving , ano thus be naturally selected . From the strong principle of inheritance , any selected variety will tend to propagat its new and modified form . This ...
Page 16
... sometimes very different character from that of the rest of the plant . Such buds can be propagated by grafting , & c . , and sometimes by seed . These " sports " are extremely rare under nature , but far from rare under cultivation ...
... sometimes very different character from that of the rest of the plant . Such buds can be propagated by grafting , & c . , and sometimes by seed . These " sports " are extremely rare under nature , but far from rare under cultivation ...
Page 19
... sometimes inherited and sometimes not so ; why the child often reverts in certain characters to its grandfather or grandmother or other much more remote ancestor ; why a peculiarity is often transmitted from one sex to both sexes , or ...
... sometimes inherited and sometimes not so ; why the child often reverts in certain characters to its grandfather or grandmother or other much more remote ancestor ; why a peculiarity is often transmitted from one sex to both sexes , or ...
Page 25
... sometimes ( as I have found with pigeons ) extremely uniform , and everything seems simple enough ; but when these mongrels are cross- ed one with another for several generations , hardly two of them will be alike , and then the extreme ...
... sometimes ( as I have found with pigeons ) extremely uniform , and everything seems simple enough ; but when these mongrels are cross- ed one with another for several generations , hardly two of them will be alike , and then the extreme ...
Page 29
... sometimes con- cur perfectly developed . Moreover , when two birds be- longing to two distinct breeds are crossed , neither of which is blue or has any of the above - specified marks , the mongrel offspring are very apt suddenly to ...
... sometimes con- cur perfectly developed . Moreover , when two birds be- longing to two distinct breeds are crossed , neither of which is blue or has any of the above - specified marks , the mongrel offspring are very apt suddenly to ...
Other editions - View all
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