Tag Archives: Gregor Mendel

November 15, 1871 (a Wednesday)

Erich Tschermak von Seysenegg

On this date, the Austrian agronomist Erich Tschermak von Seysenegg was born.  He was one of the scientists, the others being Hugo De Vries and Carl Correns, who independently rediscovered the work that Gregor Mendel did in the 1860s on the laws of heredity.  Von Seysenegg published his findings in June 1900.  The priority of Mendel was acknowledged without restriction by all three researchers.  Mendel’s discovery that inheritance is particulate, and confirmation of his discovery by Von Seysenegg, De Vries, and Correns, constitutes one of the main pillars of the theory of evolution.

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April 18, 1865 (a Tuesday)

Karl Wilhelm von Naegeli, the man who discouraged Gregor Mendel from further work on genetics.

Karl Wilhelm von Naegeli, the man who discouraged Gregor Mendel from further work on genetics.

On this date, Austrian monk Gregor Mendel, 42, sent the results of his seven-year study of peas to the eminent biologist Karl Wilhelm von Nägeli in Munich. Within these results were the basic laws of genetics, which the humble Mendel discovered single-handedly in a small garden at the Brünn monastery (now in Brno, Czech Republic). Nägeli failed to see the importance of the work; he suggested that Mendel try new experiments with different plants. Nägeli’s cool reception, coupled with the failure of the new experiments, were instrumental in Mendel’s abandoning serious research.