Kwang Jeon, a microbiologist who conducted experiments with amoebae and bacteria that supported the concept of [[endosymbiosis]]. In his experiments, Jeon observed a fascinating interaction: 1. Amoebae became infected with a type of bacteria (referred to as x-bacteria). 2. Instead of the bacteria killing the host cells, over time, the amoebae and bacteria developed a mutual dependence. The amoebae could no longer survive without the bacteria, and vice versa. This observation provided a modern example of how an endosymbiotic relationship could evolve, lending experimental support to the broader theory of [[endosymbiosis]] proposed by Lynn Margulis. Jeon’s work showed that such relationships are not only plausible but can develop relatively quickly under the right conditions. `Concepts:` `Knowledge Base:`