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
Christian Carl André Christian Carl André Christian Carl André (1763-1831) was a leading 19th century European natural scientist, publisher, economist and educator. He was among the pioneers in the study of heredity whose vision paved the way for the research of Gregor Mendel, the founder of modern genetics. Christian Carl André was born on 20 March 1763 in the German town of Hildburghausen. He studied at the University of Jena, and worked as a teacher in Eisenach and at the Schnepfenthal Salzmann School in Gotha. Then from 1798 to 1820 he lived in Brno, then within the Habsburg empire, where he headed the