The chemical interpretation of some Mendelian factors for flower-colour

Abstract

The inheritance of flower-colour in Antirrhinum majus has been worked out by one of us and also by Baur. Investigation has shown that the flower-colour of the type in Antirrhinum is due to the presence of at least six factors and that these, in various combinations, produce a series of colour-varieties. Full accounts of the factors have been given in the papers cited, but for convenience of reference four are mentioned again here, i. e .:— Y. A factor representing the power to form ivory pigment in the tube, accompanied by yellow pigment in the lips. I. A factor representing the power to form ivory pigment in the lips. R. A factor representing the power to form red pigment in the flower. B. A factor representing the power to convert red into magenta pigment.