Color Polymorphism in Pacific Tree Frogs

Science  22 Nov 1963:
Vol. 142, Issue 3595, pp. 1081-1083
DOI: 10.1126/science.142.3595.1081


Crosses between green and non-green Hyla regilla suggest that green color is determined by genes at two loci; each loci must have a dominant gene. Red is the result of a recessive gene and brown a dominant gene. The frequency of frogs with each color varies in different populations.