In Drosophila's gene for wing shape, wild-type is dominant to arc. In another gene for body color, wild-type is dominant to black. The two genes are located on the same chromosome. A test cross was performed between a fly heterozygous for both wing shape and body color with another fly homozygous recessive for both traits. The cross resulted in the numbers of each offspring:
|Number of Offspring||Trait|
|517||Wild-Type body color|
How many linkage map units apart are these two genes?