Multiple choice In F2 generation of a dihybrid cross, 4 phenotypes appear in the ratio 9 : 3 : 3 : 1, if the loci are linked 4 phenotypes appear in the ratio 9 : 3 : 3 : 1 if the loci are unlinked 2 phenotypes appear in the ratio 3 : 1 if the loci are unlinked 3 phenotypes appear in the ratio 1 : 2 : 1 if the loci are unlinked Reveal answer Fill a bubble to check yourself B Correct answer Explanation 4 phenotypes appear in the ratio 9 : 3 : 3 :1 if the loci are unlinked. It is correct as they have to assort independently.