Hugo de Vries
Hugo de Vries, 1912.
Hugo de Vries and a group of scientists examining varieties of evening primrose.
Thomas Hunt Morgan with microscope.
Morgan at microscope.
Photo of Thomas Hunt Morgan, signed and dated May 30, 1920.
Morgan at his desk at Columbia, 1920.
Thomas Hunt Morgan in the Fly Room at Columbia (2), 1917.
The need for the "prepared mind" in interpreting data: the failure of Hugo de Vries to see ratios.
Hugo de Vries, Carl Correns and Erich von Tschermak-Seysenegg were the three scientists who rediscovered Mendel's laws in 1900.