A series of two-point crosses among fruit flies is carried out between genes for brown eyes (bw), arc wings (a), vestigial wings (vg), ebony body color (e), and curved wings (cv). The following number of nonrecombinant and recombinant progeny were obtained from each cross:

\begin{array} { | l l | l | } \hline \text { Genes in cross } & \text { Progeny (NR) } & \text { Progeny (R) } \\\hline a , b w & 2224 & 117 \\\hline a , c v & 2609 & 823 \\\hline a , e & 3200 & 3200 \\\hline a , v g & 5172 & 2379 \\\hline b w , c v & 4614 & 1706 \\\hline b w , e & 4150 & 4150 \\b w , v g & 2796 & 1434 \\c v , e & 3116 & 3116 \\c v , v g & 2102 & 305 \\v g ~ e & 4559 & 4559 \\\hline\end{array}

Using these data from two-point crosses, what it the best genetic map (in m.u.) that can be developed?
A) cv 5 bw 13 a 34 vg with e assorting independently
B) bw 5 cv 24 vg 32 a with e assorting independently
C) a 5 bw 13 vg 24 e with vg assorting independently
D) cv 13 bw 5 a 27 vg with e assorting independently
E) bw 5 a 24 cv 13 vg with e assorting independently

If a Three-Strand Double Crossover Occurs Between Two Genes During

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