| → anomalies. 1859 1860 1861 1866 1869 |
| anomalies in the individuals. 1872 |
|
| → to find them still often 1859 1860 1861 1866 1869 |
| often to find them still 1872 |
|
| → the species of some other genus, are 1859 1860 1861 1866 |
| OMIT 1869 1872 |
|
| → characters; 1859 1860 1861 1866 |
| are called generic characters; 1869 1872 |
|
| → in common I 1859 1860 1861 1866 1869 |
| may be 1872 |
|
| → a remote period, since that 1859 1860 1861 1866 |
| before the 1869 1872 |
|
|
importance may remain the same. Something of the same kind applies to monstrosities: at least Is. Geoffroy St. Hilaire
no doubt, that the more an organ normally differs in the different species of the same group, the more subject it is to
→anomalies.
|
|
| On the ordinary view of each species having been independently created, why should that part of the structure, which differs from the same part in other independently-created species of the same genus, be more variable than those parts which are closely alike in the several species? I do not see that any
can be given. But on the view
species
only strongly marked and fixed varieties, we might
expect
→to find them still often
continuing to vary in those parts of their structure which
varied within a moderately recent period, and which
thus come to differ. Or to state the case in another
the points in which all the species of a genus resemble each other, and in which they differ from
→the species of some other genus, are
→characters;
and these characters
→in common I
to
from a common progenitor, for it can rarely have happened that natural selection will have modified several
fitted to more or less widely-different habits, in exactly the same manner: and as these so-called generic characters have been inherited from
→a remote period, since that
period when the
first branched off from their common progenitor, and subsequently have not varied or come to differ in any degree, or only in a slight degree, it is not probable that they should vary at the present day. On the other hand, the points in which species differ from other species of the same
are called specific characters; and as these specific characters have varied and come to differ
|
