Helena Alexandrovna Timofeeff-Ressovsky

Helena Alexandrovna Timofeeff-Ressovsky (June 21, 1898 – April 29, 1973) was a Russian biologist known for her work in developmental and population genetics and .

Helena Alexandrovna Timofeeff-Ressovsky

Helena Alexandrovna Timofeeff-Ressovsky (June 21, 1898 – April 29, 1973) was a Russian biologist known for her work in developmental and population genetics and .