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Charles Darwin

    Menna Abu Zahramembuat kutipan6 bulan yang lalu
    actions become habitual in association with certain states of the mind, and are performed whether or not of service in each particular case—
    David Rettig Hinojosamembuat kutipan2 tahun yang lalu
    found that many details of structure in man could not be explained through natural selection, I invented sexual selection;
    Illia Kohanmembuat kutipan2 bulan yang lalu
    Consequently the whole body of males inhabiting the same country would tend from the effects of constant intercrossing
    Illia Kohanmembuat kutipan2 bulan yang lalu
    In one country the inhabitants value a fleet or light dog or horse, and in another country a heavier and more powerful one; in neither country is there any selection of individual animals with lighter or stronger bodies and limbs; nevertheless after a considerable lapse of time the individuals are found to have been modified in the desired manner almost uniformly, though differently in each country.
    Illia Kohanmembuat kutipan2 bulan yang lalu
    called unconscious selection
    Illia Kohanmembuat kutipan2 bulan yang lalu
    two absolutely distinct countries inhabited by the same species, the individuals of which can never during long ages have intermigrated and intercrossed, and where, moreover, the variations will probably not have been identically the same, sexual selection might cause the males to differ.
    Анастасия Скрылёваmembuat kutipan3 bulan yang lalu
    bears the heading
    Анастасия Скрылёваmembuat kutipan3 bulan yang lalu
    occur which must here be omitted
    Yulia Sausanmembuat kutipantahun lalu
    there are two factors: namely, the nature of the organism and the nature of the conditions.
    Yulia Sausanmembuat kutipantahun lalu
    there are two factors: namely, the nature of the organism and the nature of the conditions
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