Two dominant independently assorting genes react with each other. They are
A.Complementary genes – Two genes present on separate loci that interact together to produce a dominant phenotype is called Complementary gene. In the F2 generation 9:7 ratio.
B.Supplementary - genes which include two pairs of non-allelic genes. Both of them are involved in affecting the same character. Out of the non-allelic genes, one gene is dominant and can express by itself. Second gene is also dominant but expresses only when it is supported by the presence of the first gene.
C.Duplicate genes – If the dominant alleles of two gene loci produce the same phenotypes, whether inherited together or separately, these are called Duplicate genes.
D.Collaborative genes – Two or more genes, interact together, specifying the phenotype of specific trait are called Collaborative genes.
So, the correct option is ‘Complementary genes’.