The processes of embryonic development, and instinctive actions, might be now seen as repetitions of the same kind of action by the same individual in successive generations.
If, then, similarity of action is rather hindered than promoted by memory, why introduce it into such cases as the repetition of the embryonic processes by successive generations?
And the consequence of this withdrawal of selection as regards that particular part will be to allow the part to degenerate in successive generations.
And when this relation, besides being frequently repeated in the individual, occurs in successive generations, all the many nervous actions involved tend to grow organically connected.
It is unfortunate how few precise observations have been made on the fertility of mongrel animals and plants during several successive generations.
The most different diseases, such as angina pectoris, stone in the bladder, and various affections of the skin, have appeared in successive generations at nearly the same age.
We have seen in the twenty-second chapter that variability is not a principle co-ordinate with life or reproduction, but results from special causes, generally from changed conditions acting during successive generations.
All these varieties are known to be permanent, coming true during long series of successive generations.
Every type is constant and remains unchanged in successive generations.
If the experiment is repeated, no amelioration is observed, and this result remains the same during a series of successive generations.
Beyond all question [he adds] unlikenesses of structure gradually arise among the members of successive generations.
An author writes to be read, and in the last resort the only valid criterion as to the value of his work is found in the preservation or neglect of that work by successive generations of readers.
This inscription itself, as a striking monument of unknown import, had been seen by successive generations.
Another distinction between the man and the brute which we often find asserted is, that the latter shows no signs of mental progress in successive generations.
But, apart from this general consideration, we meet with many particular instances of mental improvement in successive generations of animals, taking place even within the limited periods over which human observations can extend.
This process, whilst it leaves the embryo almost unaltered, continually adds, in the course of successive generations, more and more difference to the adult.
But this is only ascribable to the limitation of our faculties, and that even the shadow of perfection which man is capable to reach, can only be attained by the labour of successive generations.
Monumental records, alike the slightest and the most solid, are subjected to the destructive operation of time, or to the being removed at the caprice or convenience of successive generations.
Knowledge, in its most considerable branches shall endure, as long as books shall exist to hand it down to successive generations.
One might represent the germ-plasm by the metaphor of a long creeping root-stock from which plants arise at intervals, these latter representing the individuals of successive generations.
A very small effect, provided it can be repeated and accumulated in successive generations, is all that even the most exacting Lamarckian will ask for.
He does so because the germ-cell from which he sprang is composed of protoplasm handed down in direct continuity by successive generations of germ-cells from time immemorial.
It must be remembered, however, that they may be transmitted to successive generations, in which case they become germinal characters.
In every case where the inheritance of an alternative pair of characters was concerned the effect of the cross in successive generations was to produce three and only three different sorts of individuals, viz.
That source of failure he was careful to avoid, and throughout his experiments he crossed plants presenting sharply contrasted characters, and devoted his efforts to observing the behaviour of these characters in successive generations.
The above list will hopefully provide you with a few useful examples demonstrating the appropriate usage of "successive generations" in a variety of sentences. We hope that you will now be able to make sentences using this group of words.
