Tschermak: a non-discoverer of mendelism. II. A critique.

An examination of Tschermak's two papers of 1900 not only reinforces our conclusion cited in our first paper on Tschermak that he was not a rediscoverer of Mendelism, but also he did not understand Mendel when he had read it. His concept of dominance differed from that of Mendel, and his use of his own concept is inconsistent and contradictory. His discussion of his backcross data indicated that he had no idea of the nature of Mendelian ratios. Nowhere did he develop the ideas of segregation and independent assortment.