Dominance and Heterosis

Abstract

The problems of defining dominance and po-tence are discussed with special reference to the scale used in measuring quantitative characters. Transformations are suggested which will eliminate the metrical bias caused by the non-additiveness of gene effects. An analysis of data on heterosis in tomato, previously presented by Powers, reveals a transformation from arithmetic to logarithmic scale will demonstrate in this case that heterosis does go hand-in-hand with dominance.