(also known as biogenesis) is the biological principle that living organisms can only be produced from other living organisms. It stands in direct opposition to the obsolete theory of spontaneous generation (abiogenesis), which proposed that life could arise from non-living matter. Core Principles
: As Rudolf Virchow famously stated, "Omnis cellula e cellula" (all cells come from pre-existing cells), asserting that living tissue cannot arise from non-living chemicals. biogeny
: Demonstrated that maggots only appeared on rotting meat if flies were able to lay eggs on it. (also known as biogenesis) is the biological principle