On the Origin of Species by Means of Natural Selection: Or, The Preservation of Favoured Races in the Struggle for Life |
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Page 12
... become plastic , and tends to depart in some small degree from that of the parental type . Any variation which is not inherited is unimportant for us . But the number and diversity of inheritable deviations of structure , both those of ...
... become plastic , and tends to depart in some small degree from that of the parental type . Any variation which is not inherited is unimportant for us . But the number and diversity of inheritable deviations of structure , both those of ...
Page 24
... become wild or feral , though the dovecot - pigeon , which is the rock - pigeon in a very slightly altered state , has become feral in several places . Again , all recent experience shows that it is most difficult to get any wild animal ...
... become wild or feral , though the dovecot - pigeon , which is the rock - pigeon in a very slightly altered state , has become feral in several places . Again , all recent experience shows that it is most difficult to get any wild animal ...
Page 32
... become an eminent breeder . If gifted with these qualities , and he studies his subject for years , and devotes his lifetime to it with indomitable perseverance , he will succeed , and may make great improvements ; if he wants any of ...
... become an eminent breeder . If gifted with these qualities , and he studies his subject for years , and devotes his lifetime to it with indomitable perseverance , he will succeed , and may make great improvements ; if he wants any of ...
Page 37
... become blended together by crossing , may plainly be recognised in the increased size and beauty which we now see in the varieties of the heartsease , rose , pelargonium , dahlia , and other plants , when compared with the older ...
... become blended together by crossing , may plainly be recognised in the increased size and beauty which we now see in the varieties of the heartsease , rose , pelargonium , dahlia , and other plants , when compared with the older ...
Page 39
... become through long - continued , partly unconscious and partly methodical selection . Per- haps the parent bird of all fantails had only fourteen tail- feathers somewhat expanded , like the present Java fan- tail , or like individuals ...
... become through long - continued , partly unconscious and partly methodical selection . Per- haps the parent bird of all fantails had only fourteen tail- feathers somewhat expanded , like the present Java fan- tail , or like individuals ...
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Common terms and phrases
accumulated adapted affinities allied species America amount analogous ancient animals appear become bees believe birds breeds cause cells characters cirripedes climate closely allied colour common parent continuous crossed crustaceans degree difficulty distinct species divergence domestic doubt embryo Europe existing exterminated extinct extremely facts favourable Fcap 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 less living male mammals manner Marsupials migration modification modified descendants natural selection naturalists nearly nest oceanic islands offspring organisation perfect pigeons plants pollen present probably produced progenitor racters ranked reciprocal crosses remarked resemble rock-pigeon rudimentary organs seeds sexual selection Silurian slight South America sterility structure struggle successive supposed tend theory tion variability variations varieties vary whole widely