[SOLVED] Trihybrid Cross Problem Hi, I need help trying to figure out how to solve this question: Assume that in rabbits there are three different independently assorting autosomal loci that affect coat color. A colorless-pigment precursor V is converted to a colorless precursor W by action of the A allele. W is converted to a tan pigment by action of the T allele, and the tan pigment is converted to black pigment by action of the B allele: A- T- B- (reaction proceeds) V-----> W-----> tan-----> black aa tt bb (reaction blocked) The homozygous recessive condition at each locus results in loss of enzyme activity for the reaction controlled by that gene. A cross of trihybrid bunnies (AaTtBb X AaTtBb) would be expected to give rise to what phenotypic ratio in the offspring? I know the phenotypic ratio is 27:9:9:9:3:3:3:1. I can't figure out how to work this out. Can someone help me?