→ parent-form. 1859 1860 1861 1866 1869 |
parent-form, as we have seen with the short-faced tumbler. 1872 |
|
→ We have seen that 1859 1860 1861 1866 |
And 1869 1872 |
|
→ of animals, 1859 1860 1861 1866 |
or sub-groups, 1869 |
or in certain sub-groups alone, 1872 |
|
→ and 1859 1860 1861 |
land-shells, fresh-water crustaceans, 1866 1869 1872 |
|
→ with a few 1859 1860 1861 1866 |
some 1869 1872 |
|
→ these cases not undergoing 1859 1860 1861 1866 |
these groups not passing through 1869 |
such groups not passing through 1872 |
|
→ or closely resembling their parents from their earliest age, 1859 1860 1861 |
OMIT 1866 1869 1872 |
|
→ during a course of modification carried on for many generations, 1859 1860 1861 1866 |
OMIT 1869 1872 |
|
→ for their own wants at a very early stage of development, and secondly, 1859 1860 1861 |
at a very early stage of development for their own wants, and secondly, 1866 |
at a very early age for their own wants, and 1869 1872 |
|
→ exactly 1859 1860 1861 |
(and this might often be of advantage to a species) exactly 1866 |
OMIT 1869 1872 |
|
→ species, that the child 1859 1860 1861 1866 |
OMIT 1869 1872 |
|
→ at a very early age 1859 1860 1861 1866 |
OMIT 1869 1872 |
|
→ with its parents, in accordance with their similar habits. 1859 1860 1861 1866 |
as their parents. 1869 1872 |
|
↑ 1 blocks not present in 1859 1860 1861 1869; present in 1866 1872 |
Again, with respect to the singular fact of so
many terrestrial and fresh-water animals not
undergoing
any metamorphosis, whilst the
marine members of the same classes
pass through various transformations, Fritz Müller
has suggested that if
an animal during a long succession of generations had to change its habits from living
in the sea
to living on the land or in fresh-water, it
would be a
great
advantage to its descendants during their modification if they were to lose their metamorphoses;
for it is not probable that places well adapted for both the larval and mature stages, under such new and greatly changed habits of life, could
be
found unoccupied or ill-occupied by other organisms.
|
|
→ to 1859 1860 1861 |
of an animal to 1869 1872 |
|
→ in any degree 1859 1860 1861 |
slightly 1869 1872 |
|
→ manner, 1859 1860 1861 1869 |
plan, or if it profited a larva already different from its parent to change still further, 1872 |
|
→ then, 1859 1860 1861 1872 |
or if it profited a larva already widely different from its parent to change still further, then, 1869 |
|
→ larvæ might easily 1859 1860 |
larvæ might 1861 |
the larvæ might 1869 1872 |
|
→ different to any conceivable extent 1859 1860 1861 |
more and more different 1869 1872 |
|
→ parents. 1859 1860 1861 |
parents to any conceivable extent. 1869 1872 |
|
→ might, 1859 1860 1861 |
in the larvæ might, 1869 |
in the larva might, 1872 |
|
→ differ 1859 1860 1861 |
come to differ 1869 1872 |
|
→ we have seen to be 1859 1860 1861 |
is 1869 1872 |
|
→ said to be 1859 1860 1861 |
OMIT 1869 1872 |
|