On the Origin of Species by Means of Natural Selection: Or, The Preservation of Favoured Races in the Struggle for LifeMurray, 1860 - 502페이지 |
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ix 페이지
... characters -Affinities , general , complex and radiating - Extinction se- parates and defines groups- MORPHOLOGY , between members of the same class , between parts of the same individual — EMBRYOLOGY , laws of , explained by variations ...
... characters -Affinities , general , complex and radiating - Extinction se- parates and defines groups- MORPHOLOGY , between members of the same class , between parts of the same individual — EMBRYOLOGY , laws of , explained by variations ...
xii 페이지
... characters of trifling importance - its power at all ages and on both sexes Sexual Selection - On the generality of ... characters more variable than generic : secondary sexual characters variable — Species of the same genus vary in an ...
... characters of trifling importance - its power at all ages and on both sexes Sexual Selection - On the generality of ... characters more variable than generic : secondary sexual characters variable — Species of the same genus vary in an ...
13 페이지
... character whatever as the rule , and non - inheritance as the anomaly . The laws governing inheritance are quite unknown ; no ... characters to its grand- father or grandmother or other more remote ancestor ; why a peculiarity is often ...
... character whatever as the rule , and non - inheritance as the anomaly . The laws governing inheritance are quite unknown ; no ... characters to its grand- father or grandmother or other more remote ancestor ; why a peculiarity is often ...
14 페이지
... character to their aboriginal stocks . Hence it has been argued that no deductions can be drawn from domestic races to species in a state of nature . I have in vain endeavoured to ... characters to ancestral forms , 14 CHAP . I. VARIATION.
... character to their aboriginal stocks . Hence it has been argued that no deductions can be drawn from domestic races to species in a state of nature . I have in vain endeavoured to ... characters to ancestral forms , 14 CHAP . I. VARIATION.
15 페이지
... characters to ancestral forms , it seems to me not improbable , that if we could succeed in naturalising , or were to cultivate , during many genera- tions , the several races , for instance , of the cabbage , in very poor soil ( in ...
... characters to ancestral forms , it seems to me not improbable , that if we could succeed in naturalising , or were to cultivate , during many genera- tions , the several races , for instance , of the cabbage , in very poor soil ( in ...
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accumulated adapted affinities allied species America amount analogous ancient animals appear become bees believe birds breeds cause cells characters cirripedes climate closely allied colour common parent continuous crossed crustaceans degree difficulty distinct species divergence domestic doubt embryo Europe existing exterminated extinct extremely facts favourable Fcap fertility flowers formations forms fossil Gärtner genera genus geological geological period Glacial period gradations greater number groups of species habits Hence hermaphrodites hybrids hybrids produced important individuals inhabitants inherited insects instance instincts intercrossing intermediate land larvæ less living male mammals manner Marsupials migration modification modified descendants natural selection naturalists nearly nest oceanic islands offspring organisation perfect pigeons plants pollen present probably produced progenitor racters ranked reciprocal crosses remarked resemble rock-pigeon rudimentary organs seeds sexual selection Silurian slight South America sterility structure struggle successive supposed tend theory tion variability variations varieties vary whole widely