Chapter 6, Problem 3EQ

E3. The experiment of Figure $\text{6}\text{.7}$ is not like a standard testcross, because neither parent is homozygous recessive for both genes. Ifyou were going to carry out this same kind of experiment to verifythat crossing over can explain the recombination of alleles of different genes, how would you modify this experiment to make it astandard testcross? For both parents, you should designate whichalleles are found on an abnormal chromosome (i.e., knobbed, translocation chromosome $\text{9}$) and which alleles are found on normal chromosomes.