Answer:
1 : 1 : 1 : 1.
Step-by-step explanation:
If the two genes are on the same chromosome linked to each other and no recombination ever occurs between the genes during meiosis, then the phenotypic ratios will be 1 : 1 : 1 : 1 in the F2 generation. 1 : 1 : 1 : 1 is the phenotypic ratio in which the alleles of the two genes assort independently into gametes and no non-parent phenotype is produced because of no recombination of genes occur. Recombination of genes is responsible for the gametes different from both parents.