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 345
... adult state . In the great class of the Crustacea , forms wonderfully distinct from each other , namely , suctorial parasites , cirripedes , entomostraca , and even the malacostraca , appear at first as larvæ under the nauplius - form ...
... adult state . In the great class of the Crustacea , forms wonderfully distinct from each other , namely , suctorial parasites , cirripedes , entomostraca , and even the malacostraca , appear at first as larvæ under the nauplius - form ...
Página 588
... adult males alone . When , on the other hand , the adult male closely resembles the young of both sexes ( these , with rare exceptions , being alike ) , he generally resembles the adult female ; and in most of these cases the variations ...
... adult males alone . When , on the other hand , the adult male closely resembles the young of both sexes ( these , with rare exceptions , being alike ) , he generally resembles the adult female ; and in most of these cases the variations ...
Página 801
... adult male resembles the adult female , the young of both sexes have a peculiar first plumage of their own . In this class the sexes when adult resemble each other , and differ from the young . This oc curs with many birds of many kinds ...
... adult male resembles the adult female , the young of both sexes have a peculiar first plumage of their own . In this class the sexes when adult resemble each other , and differ from the young . This oc curs with many birds of many kinds ...
Contenido
INTRODUCTION | 3 |
VARIATION UNDER DOMESTICATION | 15 |
CHAPTER II | 38 |
Derechos de autor | |
Otras 23 secciones no mostradas
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 Argus pheasant beak beautiful become believe birds breeds cause characters 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 gradations greater number groups habits horns hybrids important individuals inhabitants inherited insects instance instincts intermediate islands kind larvæ latter Lepidoptera less likewise living Malay Archipelago males mammæ mammals manner Marsupials modified monkeys natural selection naturalists nearly nest observed occur ocelli offspring organs Origin of Species ornaments perfect period pigeons plants plumage pollen possess present probably produced progenitor quadrupeds races relation remarks resemble rudimentary seeds sexes sexual selection shew shewn slight South America sterility stridulating structure supposed tail tion transmitted variability variations varieties various vary whilst whole widely wings young Zoolog