the origin of entirely new properties at certain critical stages or levels in the course of evolution, as multicellular organisms, sexual reproduction, or nervous systems.
[ 1920-25 ]
the origin of entirely new properties at certain critical stages or levels in the course of evolution, as multicellular organisms, sexual reproduction, or nervous systems.
[ 1920-25 ]
Random House Webster's Unabridged English dictionary. Полный английский словарь Вебстер - Random House . 2012