Gregor Mendel pod shape, unripe pod color, flower location, and plant height. He first focused on seed shape, which was either angular or round. Between 1856 and 1863 Mendel cultivated and tested some 28,000 plants, the majority of which were pea plants ("Pisum sativum"). This study showed that, when true-breeding different varieties were crossed to each other (e.g., tall plants fertilized by short plants), in the second generation, one in four pea plants had purebred recessive traits, two out of four were hybrids, and one out of four were purebred dominant. His experiments led him to make two generalizations, the Law of
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