And yet, didn't clinical words like selective reduction and gestational carrier mask the facts?
There would be no selective reduction.
Selective reduction, for starters...
"The Council has a selective memory," A'Ran said in irritation.
In city districts the modern practice is to restrict the number to four stations per line, and to equip the exchanges and stations for selective ringing.
But eventually they may in turn become, in changed conditions, of selective value.
Thus in many cases the difficulty of supposing that selection has acted on minute and imperceptible initial variations, so small as to have no selective value, may be got rid of.
The adherence to type, the favourite conception of the transcendental morphologist, was seen to be nothing more than the expression of one of the laws of thremmatology, the persistence of hereditary transmission of ancestral characters, even when they have ceased to be significant or valuable in the struggle for existence, whilst the so-called evidences of design which was supposed to modify the limitations of types assigned to Himself by the Creator were seen to be adaptations due to the selection and intensification by selective breeding of fortuitous congenital variations, which happened to prove more useful than the many thousand other variations which did not survive in the struggle for existence.
An absolutely imperceptible physiological difference arising as a variation may be of selective value, and it may carry with it correlated variations which appeal to the human eye but are of no selective value themselves.
In this way the existence of bands in the infrared part of the spectrum has been predicted in the case of quartz and detected by experiments on the selective reflection of the material.
But it is forgotten that both the plant and the soil enjoy special powers of selective absorption, which remove and fix the better constituents of the water and leave the less valuable.
The alkaloid curarin causes motor paralysis by attacking in a selective way this junction of motor nerve cell and striped muscular fibre.
Such definitions, then, are to be accepted, if at all, as definitions of type, selective designations of leading but not strictly universal features.
In all such cases there is seen a selective character in the distribution of the lesions, some organs being in any disease much more liable to infection than others.
Genetic modification of plants and animals has been going on for a long time in the form of selective breeding.