The Origin of Species by Means of Natural Selection: Or, The Preservation of Favored Races in the Struggle for Life and The Descent of Man and Selection in Relation to SexModern library, 1936 - 1000 páginas |
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Página 141
... belonging to distinct families had slowly become adapted to live more and more out of water , and to breathe the air . For these species , from belonging to distinct families , would have differed to a certain extent , and in accordance ...
... belonging to distinct families had slowly become adapted to live more and more out of water , and to breathe the air . For these species , from belonging to distinct families , would have differed to a certain extent , and in accordance ...
Página 261
... belonging to the same family . But it must often have happened that a new species belonging to some one group has seized on the place oc- cupied by a species belonging to a distinct group , and thus have caused its extermination . If ...
... belonging to the same family . But it must often have happened that a new species belonging to some one group has seized on the place oc- cupied by a species belonging to a distinct group , and thus have caused its extermination . If ...
Página 329
... belonging to the same two genera , equally close in their resemblance , may be found . Altogether no less than ten genera are enumerated , which include species that imitate other but- terflies . The mockers and mocked always inhabit ...
... belonging to the same two genera , equally close in their resemblance , may be found . Altogether no less than ten genera are enumerated , which include species that imitate other but- terflies . The mockers and mocked always inhabit ...
Otras ediciones - Ver todas
The Origin of Species by Means of Natural Selection: Or, The Preservation of ... Charles Darwin Vista de fragmentos - 1936 |
The Origin of Species by Means of Natural Selection: Or, The Preservation of ... Charles Darwin Vista de fragmentos - 1936 |
The Origin of Species by Means of Natural Selection: Or, The Preservation of ... Charles Darwin Vista de fragmentos - 1936 |
Términos y frases comunes
acquired adult allied apes appear beak beautiful become believe birds breeds cause characters civilised closely colour common confined crossed crustaceans degree descended developed distinct species domestic doubt eggs existing extinct extremely fact favourable feathers female fertility fishes formation forms Fritz Müller genera genus given gradations greater number groups habits Hence hybrids important individuals inhabitants inherited insects instance instincts intermediate islands kind larvæ latter Lepidoptera less likewise living lower animals Malay Archipelago males mammæ mammals manner Marsupials modified monkeys natural selection naturalists nearly nest observed ocelli offspring organs Origin of Species ornaments perfect period pigeons plumage pollen present probably produced progenitor quadrupeds races Red Grouse relation remarks resemble rudimentary seeds sexes sexual selection shew shewn slight South America sterility stridulating structure supposed tail tion variability variations varieties various vary whilst whole widely wings young