Moreover, as we have seen in the preceding chapter, this almost monstrous variety most probably originated as an individual sport--being afterwards maintained and multiplied for a time by artificial selection.
But if it is possible to attribute this effect--or part of it--to an artificial selection of stupid animals, I give in the text an example occurring under nature.
Yet we know, as a matter of fact, that all these differences have been produced by a process of artificial selection, or pairing, which has been continuously practised by horticulturists and breeders through a number of generations.
In particular, there will be found a tolerably extensive series of woodcuts, serving to represent the more important products of artificial selection.
Natural selection having been compared with artificial selection, and the analogy pointed out, there apparently remains no indefiniteness: the inconvenience being, however, that the definiteness is of a wrong kind.
Certainly not to artificial selection; for most of the modifications named make no appreciable external signs: the width across the zygomata could alone be perceived.
Greyhounds and pointers do not yield valid evidence, because their peculiarities are more due toartificial selection than to any other cause.
He explains very clearly the process of artificial selection, and says that in the garden we are following Nature's method.
But, although the principle is quite clear, artificial selection has, as yet, done very little towards reaching a really high standard.
It is as yet doubtful whether it is a half race or a double race, and whether it might be purified and strengthened by artificial selection.
For the sake of clearness we might designate the last named process with the term of intra-specific selection, and it is obvious that this term is applicable both to natural and to artificial selection.
For the flavor is the one great point, which must be found ready in nature and which may be improved, but can never be created by artificial selection.
Now Darwin asked himself, Does there exist a similar process of selection in nature, and are there forces in nature which take the place of man's activity in artificial selection?
Let him admit that in natural, as well as in artificial selection, there may be a choice and direction; his principle immediately becomes much more fruitful than it was before.
It has the further advantage that, after discussing variation and the effects of artificial selection, we proceed at once to explain how natural selection acts.
The way this is done is by artificial selection, and it is very important to understand this process and its results.
These studies resulted in suggesting means for improving crops by artificial selection, as shown in the work of Luther Burbank.
In artificial selection the breeder chooses out for pairing only such individuals as possess the character desired by him in a somewhat higher degree than the rest of the race.
Natural selection would usually favour these adaptive changes, and they would also have been aided by an artificial selection which is often unconscious or indirect.
Organic forms will no longer be modified by natural but wholly by artificial selection.
If art by artificial selection, why not Nature by natural selection?
Such is Artificial Selection; but man is after all but one of Nature’s works, and one of her numerous agents.
This is artificial selection, and is best exemplified in the experiments with pigeons.
Pasteur saved the silk industry of France, and perhaps of the whole world, by the application of this law of artificial selection.
It is impossible for the State to correct this evil, except by lessening the burden the fit man has to bear; and the elimination of the unfit, by artificial selection, is the surest and most effective way of bringing this about.
We have learned from the immortal Pasteur the true and scientific method of artificial selection of the fit, by the elimination of the unfit.
This is, I think, in favour of the inference that the variety has been produced by natural and not by artificial selection, for diminished fertility is seldom or never acquired between artificial varieties.
It would therefore be in agreement with natural laws that human society should make an artificial selection, by the elimination of anti-social and incongruous individuals.
Only the slaughter of several hundred murderers every year would have a sensible result in the way of artificial selection; but that is more easily said than done.
The above list will hopefully provide you with a few useful examples demonstrating the appropriate usage of "artificial selection" in a variety of sentences. We hope that you will now be able to make sentences using this group of words.
