. In 1850, he took an examination for teacher certification. He failed, receiving his lowest marks in biology and geology! How things can change. Nevertheless, he was sent to the University of Vienna. He never got his teacher's license, but from 1854 to 1868, he was a substitute teacher of natural science at the Brunn Modern School (Edelson, 24).
             Meanwhile in 1856, he started his famous pea plant experiments in the monastery. In his research, Mendel used a discovery that had been made not long before: Plants have sex. So when Mendel began his work with peas, he was actually doing the same sort of work that others had done. The difference was the conclusions he drew from his observations (Gasking). First, he chose the goal of his research which was to find out exactly how traits are passed from generation to generation (Gasking). The plants he chose for his experiments were va
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