In Drosophila melanogaster the allele for long wings is dominant over the allele for vestigial wings, and the allele for a grey body is dominant over the allele for a black body. A testcross was done to check for genetic linkage between the genes for these traits, with the following results for the offspring: 410 flies with long wings and a black body
105 flies with long wings and a grey body
390 flies with vestigial wings and a grey body
95 flies with vestigial wings and a black body
Which of the following best represents the map distance between the genes for these two traits?