You generated a plant that is heterozygous for three quantitative trait loci (qtls). in the heterozygous state, each locus has one allele that contributes one dose of trait (pigment) and another allele that does not contribute a dose to the trait; genotype: r1/r1; r2/r2; r3/r3. if you testcross this plant (by r1/r1; r2/r2; r3/r3 all "0-dose" alleles) what distribution of pigment doses would be observed in the progeny?