Below Is a Genetic Map for Three Loci $\begin{array} { lll } \text { A } &&&&\text { B } &&&\text { C } \\\hline\end{array}$

Essay

Below is a genetic map for three loci. Which two of these loci would show the smallest physical distance in base pairs, if the frequency of crossing over is equal in this chromosome region? Explain your answer. $\begin{array} { lll } \text { A } &&&&\text { B } &&&\text { C } \\\hline\end{array}$
$5 \text { map units } ~~~~~~~~~7 \text { map units }$