Multiple choice On what factor does the strength of linkage depend? Size of genes Distance between the genes Types of nucleotides in the gene Length of chromosome Reveal answer Fill a bubble to check yourself B Correct answer Explanation The strength of linkage depends upon the distance between the genes. Distance between the genes is inversely proportional to strength, i.e. D is proportional to 1/S, where D is the distance and S is the strength of linkage.