Comparison with 1861 |
|
the several species to their several places in the economy of nature, and likewise to fit the two sexes of the same species to each other, or to fit the males and females to different habits of life, or the males
to struggle with other males for the possession of the females. |
|
Finally, then, I conclude that the greater variability of specific characters, or those which distinguish species from species, than of generic characters, or those which the species possess in common;—
that the frequent extreme variability of any part which is developed in a species in an extraordinary manner in comparison with the same part in its congeners; and the not great
degree of variability in a part, however extraordinarily it may be developed, if it be common to a whole group of species;—
that the great variability of secondary sexual characters, and the
great amount of
difference in these same characters between
closely allied species;—
that secondary sexual and ordinary specific differences are generally displayed in the same parts of the organisation,—
are all principles closely connected together. All being mainly due to the species of the same group having descended from
a common progenitor, from whom they have inherited much in common,—
to parts which have recently and largely varied being more likely still to go on varying than parts which have long been inherited and have not varied,—
to natural selection having more or less completely, according to the lapse of time, overmastered the tendency to reversion and to further variability,—
to sexual selection being less rigid than ordinary selection,—
and to variations in the same parts having been accumulated by natural and sexual selection, and thus
adapted for secondary sexual, and for ordinary specific
purposes.
|
the several species to their several places in the economy of nature, and likewise to fit the two sexes of the same species to each other, or to fit the males
and females to different habits of life, or the males and females to different habits of life, or the males 1859 1860 1861 1866 1869 |
OMIT 1872 |
to struggle with other males for the possession of the females. |
|
Finally, then, I conclude that the greater variability of specific characters, or those which distinguish species from species, than of generic characters, or those which
the species possess in common;— the species possess in common;— 1859 1860 1861 |
the species possess in common; — 1866 1869 |
are possessed by all the species;— 1872 |
that the frequent extreme variability of any part which is developed in a species in an extraordinary manner in comparison with the same part in its congeners; and the
slight slight 1860 1861 1866 1869 1872 | not great 1859 |
degree of variability in a part, however extraordinarily it may be developed, if it be common to a whole group of
species;— species;— 1859 1860 1861 1872 | species; — 1866 1869 |
that the great variability of secondary sexual characters, and
the the 1859 1860 1861 1866 1869 | their 1872 |
great
amount of amount of 1859 1860 1861 1866 1869 | amount of 1872 |
difference in
these same characters between these same characters between 1859 1860 1861 1866 1869 |
OMIT 1872 |
closely allied
species;— species;— 1859 1860 1861 1872 | species; — 1866 1869 |
that secondary sexual and ordinary specific differences are generally displayed in the same parts of the
organisation,— organisation,— 1859 1860 1861 1872 | organisation, — 1866 1869 |
are all principles closely connected together. All being mainly due to the species of the same group
having descended from having descended from 1859 1860 1861 1866 1869 |
being the descendants of 1872 |
a common progenitor, from whom they have inherited much in
common,— common,— 1859 1860 1861 1872 | common, — 1866 1869 |
to parts which have recently and largely varied being more likely still to go on varying than parts which have long been inherited and have not
varied,— varied,— 1859 1860 1861 | varied, — 1866 1869 | varied— 1872 |
to natural selection having more or less completely, according to the lapse of time, overmastered the tendency to reversion and to further
variability,— variability,— 1859 1860 1861 1872 | variability, — 1866 1869 |
to sexual selection being less rigid than ordinary
selection,— selection,— 1859 1860 1861 1872 | selection, — 1866 1869 |
and to variations in the same parts having been accumulated by natural and sexual selection, and
having been thus having been thus 1860 1861 1866 1869 1872 |
thus 1859 |
adapted for secondary sexual, and for ordinary
specific specific 1859 1860 1861 1866 | specific 1869 1872 |
purposes.
|