ONE STEP IN THE DEVELOPMENT OF HEREDITARY PIGMENTATION IN THE FISH ORYZIAS LATIPES

Abstract

Dermal tissue from the light-colored recessive phenotypes has been treated with the chromogen, dihydroxyphenylalanin (dopa). Certain ameboid cells become blackened. This is taken to indicate that these cells contain the necessary oxydase for melanin formation but are lacking in chromogen, and that this is the basis of the distinction between the recessive and dominant phenotypes.