Symbiosis | Symbiosis | Gaia Hypothesis
Hydrophobins in ectomycorrhizal symbiosis: hypothesis
Scientists strive to work , but they are still human and vulnerable to biases just like everyone else. In this case, scientists had two big biases that tainted their reaction to the endosymbiotic hypothesis. First, ever since Darwin, evolution had been about competition between organisms fighting it out for territory, mates, and food. But the endosymbiotic hypothesis focused on . Evolutionary theory didn't say that cooperation happen, but scientists just weren't used to the idea that evolution could occur as the result of two organisms working together.
On Memetics: Metamorphosis: the symbiosis hypothesis
2. Inconsistency with an accepted theory
Many scientists were skeptical of the endosymbiotic hypothesis because it didn't seem to fit into the of evolution as it was understood then. Between 1900 and 1950, biologists made many key discoveries in the field of genetics by focusing on small, random changes in DNA mutations that occur when a cell reproduces. These genetic "mistakes" were clearly an important mechanism of evolution, and many biologists thought that evolution occurred as a result of the accumulation of many small mutations over time. However, the new hypothesis proposed big evolutionary advances through symbiosis not slow and steady change through tiny mutations. The endosymbiotic hypothesis seemed, at first, to be a poor fit with what scientists of the day understood about how evolution works.