When dominant from of both gene interact and they have same phenotype then are called complementary ....
and the interaction between them is called complementary gene interaction....

Explanation:

In genetics, the term "independent assortment" refers to the random distribution of alleles (alternative forms of a gene) during the formation of gametes (sex cells). When genes assort independently, the inheritance of one gene does not affect the inheritance of another gene. This is due to the genes being located on different chromosomes or far apart from each other on the same chromosome.

Supplementary Genes:
Supplementary genes refer to two or more genes that work together to produce a specific trait. In this case, the genes are not independently assorting, as their interaction is necessary for the expression of the trait. If the genes are not present together, the trait may not be expressed. Therefore, option (a) is not correct.

Duplicate Genes:
Duplicate genes are multiple copies of the same gene found within an organism's genome. These duplicate genes can provide redundancy or contribute to variations in traits, but they do not necessarily interact with each other. Duplicate genes can independently assort, but they are not directly related to each other in terms of interaction. Therefore, option (c) is not correct.

Collaborative Genes:
Collaborative genes can work together to produce a specific trait, but their interaction is not necessarily dependent on each other. These genes may enhance or modify the expression of a trait, but they can still independently assort. However, they do not exhibit a specific interaction pattern that defines their inheritance. Therefore, option (d) is not correct.

Complementary Genes:
Complementary genes are two genes that interact with each other to produce a specific trait. In this case, the alleles of the genes are non-functional on their own, but when present together, they complement each other and result in the expression of the trait. The interaction between complementary genes is necessary for the complete expression of the trait. This type of gene interaction is often observed in cases where a single homozygous recessive genotype does not express the trait, but the presence of at least one dominant allele from each gene results in the expression of the trait. Therefore, option (b) is correct.

To summarize, the correct answer is (b) complementary genes because they interact with each other to produce a specific trait, and their alleles are non-functional on their own.