Phenotypic ratio of Mendelian Dihybrid cross is __________

The phenotypic ratio of a standard Mendelian dihybrid cross involving two individuals heterozygous for two distinct traits (e.g., $RrYy\times RrYy$) is $9:3:3:1$. This represents 9 dominant-dominant, 3 dominant-recessive, 3 recessive-dominant, and 1 recessive-recessive phenotypes.