On the Origin of Species by Means of Natural Selection |
From inside the book
Results 1-5 of 72
Page 15
... breed freely under confinement , even in the many cases when the male and female unite . How many animals there are which will not breed , though living long under not very close confinement in their native country ! This is generally ...
... breed freely under confinement , even in the many cases when the male and female unite . How many animals there are which will not breed , though living long under not very close confinement in their native country ! This is generally ...
Page 16
... breed most freely under the most unnatural conditions ( for instance , the rabbit and ferret kept in hutches ) , showing that their reproductive system has not been thus affected ; so will some animals and plants withstand domestication ...
... breed most freely under the most unnatural conditions ( for instance , the rabbit and ferret kept in hutches ) , showing that their reproductive system has not been thus affected ; so will some animals and plants withstand domestication ...
Page 18
... Breeders believe that long limbs are almost always accompanied by an elongated head . Some in- stances of correlation are quite whimsical : thus cats with blue eyes are invariably deaf ; colour and constitutional peculiarities go ...
... Breeders believe that long limbs are almost always accompanied by an elongated head . Some in- stances of correlation are quite whimsical : thus cats with blue eyes are invariably deaf ; colour and constitutional peculiarities go ...
Page 19
... breeds are often transmitted either ex- clusively , or in a much greater degree , to males alone . A much more important rule , which I think may be trusted , is that , at whatever period of life peculiarity first appears , it tends to ...
... breeds are often transmitted either ex- clusively , or in a much greater degree , to males alone . A much more important rule , which I think may be trusted , is that , at whatever period of life peculiarity first appears , it tends to ...
Page 21
... breed our cart and race - horses , long and short - horned cattle , and poultry of various breeds , and esculent vegetables , for an almost infinite number of generations , would be opposed to ali experience . I may add , that when ...
... breed our cart and race - horses , long and short - horned cattle , and poultry of various breeds , and esculent vegetables , for an almost infinite number of generations , would be opposed to ali experience . I may add , that when ...
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