Heredity in Primula Sinensis, lower part of plate VI in Mendel's Principles of Heredity, William Bateson, Cambridge, 1909

Licence: Attribution 4.0 International (CC BY 4.0)

Credit: Heredity in Primula Sinensis, lower part of plate VI in Mendel's Principles of Heredity, William Bateson, Cambridge, 1909. Wellcome Collection. Source: Wellcome Collection.