Collier's New Encyclopedia (1921)/Mendelism

MENDELISM, a theory of heredity discovered and announced in 1865 by Gregor Mendel. His conclusions were the result of experimentation with plants, and the theory relates, in general, to the effects caused by successive crossing of hybrids. The general conclusion is that when two characters are mutually exclusive, one of them is always "dominant" over the other, which is said to be "recessive."