The Genetic and the operative evidence relating to secondary sexual characters

Focusing on the interplay between genetics and secondary sexual characteristics, this work delves into the scientific evidence supporting the influence of heredity on traits associated with sex. The author, Thomas Hunt Morgan, explores both genetic and operational aspects, providing insights into how these characteristics manifest and evolve. This reproduction of the original text offers a detailed examination of the mechanisms behind sexual differentiation, contributing to the broader understanding of genetics in relation to sexual traits.