Final answer:
In a double heterozygote, the alleles will be arranged in the cis configuration when both alleles are located on the same chromosome in a heterozygous individual.
Step-by-step explanation:
In a double heterozygote, the alleles will be arranged in the cis configuration when both alleles are located on the same chromosome in a heterozygous individual. This means that the two different alleles will be found on one homologous chromosome, while the other homologous chromosome will have the same two alleles. For example, if the double heterozygote has alleles A and B, the cis configuration would be AB/AB.