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 |
Dentro del libro
Resultados 1-3 de 80
Página 146
... probably affect the hind limbs from exercising them more , and possibly even the form of the pelvis ; and then by the law of homologous variation , the front limbs and the head would probably be affected . The shape , also , of the ...
... probably affect the hind limbs from exercising them more , and possibly even the form of the pelvis ; and then by the law of homologous variation , the front limbs and the head would probably be affected . The shape , also , of the ...
Página 357
... probably been short in comparison with the periods during which they retain the same form . It is the dominant and widely ranging species which vary most frequently and vary most , and va- rieties are often at first local - both causes ...
... probably been short in comparison with the periods during which they retain the same form . It is the dominant and widely ranging species which vary most frequently and vary most , and va- rieties are often at first local - both causes ...
Página 619
... probably followed from those females which were the most securely held during the act of reproduction , having left the largest number of offspring . Another Brazilian amphipod ( Orchestia Darwinii , fig . 8 ) presents a case of ...
... probably followed from those females which were the most securely held during the act of reproduction , having left the largest number of offspring . Another Brazilian amphipod ( Orchestia Darwinii , fig . 8 ) presents a case of ...
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