If in calculating the distance between two genes using data from a testcrossed dihybrid you arrive at a genetic distance of 70 map units,there is likely to be something wrong with your calculations,the experimental data,or with the experiment itself.

Question

Quizplus · Accepted Answer

A genetic distance of 70 map units is unusually high and suggests that there may be some errors in calculations or experimental data or the experiment itself. In most cases, genetic distances are usually less than 50 map units.

If in Calculating the Distance Between Two Genes Using Data