What is a convenient way to identify gene order in a trihybrid mapping cross?
A) Look for double crossover progeny and identify the gene that was flipped relative to parentals.
B) Look for the largest class of single crossovers and the two genes are the ones on the ends.
C) Look for the smallest class of single crossovers to identify the genes which are closest together.
D) A and B only.
E) All of the above.