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 175
... namely a zooid with its cell . Hence we can understand how it is that these organs graduate in some cases , as I am in- formed by Mr. Busk , into each other . Thus with the avicularia of several species of Lepralia , the moveable ...
... namely a zooid with its cell . Hence we can understand how it is that these organs graduate in some cases , as I am in- formed by Mr. Busk , into each other . Thus with the avicularia of several species of Lepralia , the moveable ...
Página 283
... namely , whether the several species of a genus which must on our theory all be descended from a common pro- genitor , can have migrated , undergoing modification during their migra- tion , from some one area . If , when most of the ...
... namely , whether the several species of a genus which must on our theory all be descended from a common pro- genitor , can have migrated , undergoing modification during their migra- tion , from some one area . If , when most of the ...
Página 447
... namely fishes and amphibians , do not possess com- plex instincts ; and amongst mammals the animal most remarkable for its instincts , namely the beaver , is highly intelligent , as will be admitted by every one who has read Mr ...
... namely fishes and amphibians , do not possess com- plex instincts ; and amongst mammals the animal most remarkable for its instincts , namely the beaver , is highly intelligent , as will be admitted by every one who has read Mr ...
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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