Final answer:
Robert Agnew developed the general strain theory in 1992, unrelated to the biological studies mentioned in the provided texts.
Step-by-step explanation:
The general strain theory was actually developed by sociologist Robert Agnew in 1992, not by those involved in medical or biological studies. However, the provided texts discuss scientific discoveries related to the field of biology, such as germ theory and the identification of DNA as the genetic material. The confusion appears to arise from the similar terms 'strain' used in both biological and sociological contexts. In biology, a 'strain' is a genetic variant or subtype of a micro-organism. In sociology, 'strain theory' pertains to social structures and pressures that may lead individuals to commit crimes due to their inability to achieve societal goals by legitimate means. Therefore, the information provided does not relate directly to the originator of the general strain theory.