159 years ago today, on September 25, 1866 (August 17, 1866 lunar calendar), geneticist Morgan was born. The hereditary nature of living things has long been recognized by people, and from this came genetics. There are many theoretical theories in genetics, mainly two schools: one school is the Michelin school, and the other school is the Morgan school. The characteristics of the Michelin school are: starting from production practice, the main purpose of their work is to improve and domesticate varieties, improve the yield and quality of crops. The work of the Morgan school, on the other hand, starts from the theoretical basis, and the purpose is to understand the laws of genetic variation. Their work focuses on the laboratory, looking for the material basis of inheritance and the process of these material effects. Morgan's research determined that hereditary genes are located on chromosomes and founded the theory of genes. This is a major advance in the history of human genetics. Morgan was born on September 25, 1866 in Lexington, Virginia, USA. He studied biology at Shotaki University and Hopkins University. From 1891 to 1904, he served as an associate professor of zoology at Brynmar University. From 1928 to 1945, he served as a professor of biology at the California Institute of Technology. For his outstanding contributions to experimental biology and genetics, Morgan won the 1933 Nobel Prize in Physiology and Medicine. In 1945, Morgan died. His main works include "Experimental Embryology" and "Theory of Genes". Morgan devoted his life selflessly to the cause of science. He trained many students, and he coaxed them in the hope that they would surpass him. When Tan Jiazhen, a famous Chinese scientist, was about to return to China, Morgan said affectionately and humbly to Tan Jiazhen: "I see a young Chinese who has surpassed me, and I hope that more young people will surpass me and you. "After returning to China, Tan Jiazhen also trained his students like Morgan. Shortly after the student's paper was published, Tan Jiazhen received a congratulatory letter from Morgan." I finally saw a young Chinese who surpassed me and you. I am proud that you have personally followed the students who surpassed you. "