“When under any kind of noxious influence an organism becomes debilitated, its successors will not resemble the healthy, normal type of the species, with capacities for development, but will form a new sub-species, which, like all others, possesses the capacity of transmitting to its offspring, in a continuously increasing degree, its peculiarities, these being morbid deviations from the normal form – gaps in development, malformations and infirmities”
Text from Wikiquote, available under CC BY-SA 4.0.
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