The Origin of Species by Means of Natural Selection: Or, The Preservation of Favoured Races in the Struggle for LifeJ. Murray, 1920 - 432ÆäÀÌÁö |
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... Selection , anciently followed , their Effects - Methodical and Unconscious Selection - Unknown Origin of our ... natural selection - The term used in a wide sense- e - Geometrical ratio of increase - Rapid increase of naturalised ...
... Selection , anciently followed , their Effects - Methodical and Unconscious Selection - Unknown Origin of our ... natural selection - The term used in a wide sense- e - Geometrical ratio of increase - Rapid increase of naturalised ...
vi ÆäÀÌÁö
... NATURAL SELECTION ; OR THE SURVIVAL OF THE FITTEST . Natural Selection - its power compared with man's selection - its power on characters of trifling importance - its power at all ages and on both sexes -Sexual selection - On the ...
... NATURAL SELECTION ; OR THE SURVIVAL OF THE FITTEST . Natural Selection - its power compared with man's selection - its power on characters of trifling importance - its power at all ages and on both sexes -Sexual selection - On the ...
xiii ÆäÀÌÁö
... natural- ists believed that species were immutable productions , and had ... nature ? as the teeth , for example , grow by necessity , the front ones sharp ... selection shadowed forth , but how little Aristotle fully comprehended the ...
... natural- ists believed that species were immutable productions , and had ... nature ? as the teeth , for example , grow by necessity , the front ones sharp ... selection shadowed forth , but how little Aristotle fully comprehended the ...
xv ÆäÀÌÁö
... natural selection , and this is the first recognition which has been indicated ; but he applies it only to the races of man , and to certain characters alone . After remarking that negroes and mulattoes enjoy an immunity from certain ...
... natural selection , and this is the first recognition which has been indicated ; but he applies it only to the races of man , and to certain characters alone . After remarking that negroes and mulattoes enjoy an immunity from certain ...
xx ÆäÀÌÁö
... Natural Selection is promulgated by Mr. Wallace with admirable force and clearness . Von Baer , towards whom all zoologists feel so profound a respect , expressed about the year 1859 ( see Prof. Rudolph Wagner , ' Zoologisch ...
... Natural Selection is promulgated by Mr. Wallace with admirable force and clearness . Von Baer , towards whom all zoologists feel so profound a respect , expressed about the year 1859 ( see Prof. Rudolph Wagner , ' Zoologisch ...
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accumulated adapted admit affinities allied species America analogous ancient appear beak become bees believe belonging birds breeds cause cells characters climate closely allied colour continued crossed crustaceans degree developed difficulty distinct species domestic animals doubt effects eggs embryo existing extinct extremely fact favourable female fertilised fertility flowers formation formerly forms fossil Fritz Müller genera genus geological geological period Glacial period gradations greater number habits Hence hybrids important increase individuals inhabitants inherited insects instance instincts intercrossing intermediate kind lamell©¡ larv©¡ less living male mammals manner marsupials migration modified descendants natural selection naturalists nearly nest occasionally oceanic islands offspring organisation organs parent peculiar perfect pigeon pistil pollen present preserved principle probably produced quadrupeds ranked reciprocal crosses remarked resemblance rudimentary seeds sexual selection Silurian slight South America stamens sterility structure successive supposed tend theory tion variability variations varieties vary whilst whole wings young