1909 Mutationism

The book of science

Tom Sharp

Hugo de Vries evolution


Damage and repair


De Vries was an experimental biologist specializing in the study of evening primroses. Darwin, in his theory of pangenesis, claimed that each body part produced gemmules that carried its own inheritable characteristics. De Vries also believed that traits are inherited in particles, which he called pangenes (which Wilhelm Johannsen later called genes).

See also in The book of science:

Readings on wikipedia: