Pea diminish leaf and stem growth. Adult weevils feed on the leaves and create a notched, "c-shaped" appearance on the outside of the leaves. In the mid-19th century, Austrian monk Gregor Mendel's observations of pea pods led to the principles of Mendelian genetics, the foundation of modern genetics. He ended up growing and examining about 28,000 pea plants in the course of his experiments. Mendel chose peas for his experiments because he could grow them easily, develop pure-bred strains, protect them from cross-pollination, and control their pollination. Mendel cross-bred tall and dwarf pea plants, green and yellow peas, purple and white
Johann Gregor Thalnitscher Johann Gregor Thalnitscher Johann Gregor Thalnitscher von Thalberg (10 March 1655 – 3 October 1719; less often known by his Slovene name "Janez Gregor Dolničar") was a Carniolan lawyer, scholar of ancient inscriptions, chronicler, and historian. Thalnitscher was born in Ljubljana on 10 March 1655 to Johann Baptist Thalnitscher and Maria Anna née Schönleben. His father was a Ljubljana judge and mayor, and made it possible for his son to study and travel throughout Germany and Italy, where he developed an enthusiasm for Baroque art. He studied in Ingolstadt and Bologna, and became a doctor of law in Bologna in