第 1 季，第 2 集: Missing from On the Origin of Species is any account of how traits pass from one generation to the next. Explore the work on genetic inheritance by Gregor Mendel, whose pioneering rules of heredity remained essentially unknown for 35 years. Follow up with 20th-century pioneers, including Thomas Hunt Morgan and Theodosius Dobzhansky, who established the “modern synthesis” of evolutionary biology.