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 84
... greater degree ; but this alone would never account for so habitual and large a degree of difference as that be ... greater , and would be noted as forming two sub - breeds . Ultimately , after the lapse of centuries , these sub - breeds ...
... greater degree ; but this alone would never account for so habitual and large a degree of difference as that be ... greater , and would be noted as forming two sub - breeds . Ultimately , after the lapse of centuries , these sub - breeds ...
Página 418
... greater use , and is an unexpected result : but sailors chiefly use their arms in pulling , and not in supporting weights . With sailors , the girth of the neck and the depth of the instep are greater , whilst the circumference of the ...
... greater use , and is an unexpected result : but sailors chiefly use their arms in pulling , and not in supporting weights . With sailors , the girth of the neck and the depth of the instep are greater , whilst the circumference of the ...
Página 666
... greater number of brilliantly - coloured Lepidoptera it is the male which has been chiefly modified through sexual selection ; the amount of difference between the sexes mostly depending on the form of inheritance which has prevailed ...
... greater number of brilliantly - coloured Lepidoptera it is the male which has been chiefly modified through sexual selection ; the amount of difference between the sexes mostly depending on the form of inheritance which has prevailed ...
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 the Species by Means of Natural Selection Charles Darwin Sin vista previa disponible - 2012 |
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