In a dihybrid cross of two parents who are heterozygous for bothtraits, what fraction of their offspring will be homozygous recessive for both traits traits

A dihybrid cross tracks two traits. Both parents are heterozygous, and one allele for each trait exhibits complete dominance. This means that both parents have recessive alleles, but exhibit the dominant phenotype. The phenotype ratio predicted for dihybrid cross is 9:3:3:1.