Usage examples (28)

• We should thus arrive at a demonstration of what Eimer called orthogenesis, or evolution in definite directions.
• The use of “evolution” to describe a predictable progressive alteration of phenotype usually is classified under the idea of orthogenesis which I think has been discredited.
• But could those early storytellers have actually been feeling their way around the idea of orthogenesis, i.e., spontaneous birth, where life has the innate ability to...
• The quotes above seem to be not so much anti-evolution, but in favor of a kind of orthogenesis which can be entirely materialist.