what are complementary genes and supplementary genes?

ratio of F2 generation in each case?

Complementary gene: one of a pair of genes, each from different loci, that together are required for the expression of a certain characteristic.

Supplementary gene: one of two pairs of nonallelic genes that interact in such a way that one pair needs the presence of the other to be expressed, whereas the second pair can produce an effect independently of the first.

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