A monohybrid cross results in a 9:3:3:1 ratio, whereas a dihybrid cross gives a 3:1 ratio

A monohybrid cross involves a single parent, whereas a dihybrid cross involves two parents

A dihybrid cross involves organisms that are heterozygous for two characters that are being studied, and a monohybrid cross involves organisms that are heterozygous for only one character being studied

A monohybrid cross is performed for one generation, whereas a dihybrid cross is performed for two generations