The other school is equally insistent that there are abundant instances of the inheritance of acquired characters, claiming that these proofs are so strong as to demand their acceptance.
There is no question that has excited such a wide interest in the biological world during the last fifteen years as this one of the inheritance of acquired characters.
It has been shown beyond question that while the inheritance of congenital characters is the rule, the inheritance of acquired characters is at all events unusual.
Here we have again merely the same influence, chemical in this case, acting simultaneously on somatic cells and germ-cells, which is not the inheritance ofacquired characters at all.
The experiments therefore are entirely irrelevant to what has been called the inheritance of acquired characters.
Herbert Spencer claims that "the inheritance of acquired characters" is a necessary supplement to natural selection.
Close contemplation of the facts impresses me more strongly than ever with the two alternatives--either there has been inheritance of acquired characters, or there has been no evolution.
Again, "the inheritance of acquired characters, which it is now the fashion of the biological world to deny, was by Mr. Darwin fully recognized and often insisted on.
Of Lamarck's fourth law, which asserts the transmission of acquired characters, little need here be said in the way of exposition.
So far as we can see, a belief in the inheritance of acquired characters is not necessary to the theories of orthogenesis held by Naegeli and Korchinsky.
This school lays great stress on the inheritance of acquired characters, especially on the inheritance of the effects of use and disuse.
They deny the inheritance of acquired characters, and preach the all-sufficiency of natural selection to explain the varied phenomena of nature.
That like begets like is true as a broad principle, but it has many exceptions, and the non-heredity of acquired characters may be one of them.
The gemmules--as in Galton's theory of heredity and with neuter insects--might be perfectly independent of pangenesis and the normal inheritance of acquired characters.
Progressive heredity, or the inheritance of acquired characters, transmits to offspring a part of those features which were acquired by the parents in the course of their individual lives.
On the other hand, it has had an evil influence in so far as it denied the inheriting of acquired characters, which I hold, with Lamarck and Darwin, to be one of the soundest and most indispensable supports of the theory of descent.
In the interest of his complicated hypotheses, Weismann denies one of Lamarck's most important principles of transmutation--namely, the inheritance of acquired characters.
This remarkable ontogenetic metamorphosis also can be fully explained by a corresponding phylogenetic process, and affords a very fine instance of the inheritance of acquired characters.
We have seen that a school of biologists has arisen who deny the inheritance of acquired characters.
This is in accordance with the famous principle that there is no inheritance of acquired characters.
Weissman expressed this in his famous statement that "There is no inheritance of acquired characters.
In other words, even those who are not followers of Weissman, have accepted the idea that there is little inheritance of acquired characters.
Since, however, we have come to disbelieve in the transmission of acquired characters, this explanation will no longer serve.
On the other hand, as we shall presently show, there is much reason for believing that such acquired charactersare in their nature non-heritable.
From the first he has been consistent in holding natural selection the sole factor of organic evolution--leaving no room for sexual selection, inheritance of acquired characters, &c.
The theory of the Non-Inheritance of Acquired Characters, with which Professor Weismann's name is inseparably connected, was now coming to the front.
With this also is connected the celebrated denial of the inheritance of acquired characters.
The empirical issue is doubtful, with a considerable balance against the supposed inheritance of acquired characters.
Professor Henslow in his Heredity of Acquired Characters in Plants, 1908, p.
With regard to the inheritance of acquired characters I am not inclined to agree with Huxley.
It is interesting to find that though the author, like his contemporaries, believed in the inheritance of acquired characters, he excluded the case of mutilation.
It is, in fact, the much discussed and vitally important problem of the Heredity of Acquired Characters.
Let us then first explain what is meant by the "acquired characters" which it was thought that a true theory of heredity must explain.
And with this also is connected the equally celebrated denial of the inheritance of acquired characters.
The above list will hopefully provide you with a few useful examples demonstrating the appropriate usage of "acquired characters" in a variety of sentences. We hope that you will now be able to make sentences using this group of words.
