A trip to Andes lead A Young Scientist of Genetics to A Scientific Journey through History, Knowledge and Research to Uncover The Story of Genetic Science and to Find out What Happened that Changed the Natural Science into Pseudoscience, Also the Discovery of How The Inheritance Law with Natural Ratio 1:4:6:4:1 Turned to be A Systematic Ratio 9:3:3:1 and Why this Systematic Ratio Ruled and Shaped the Perception of Human Population and Conceptions of Genetic Science During the 20th Century.