5. For Drosophila (a kind of fruit fly), B, the gray body, is dominant over

b, the black body, and V , the wild-type wing is dominant over v, vestigial (a very small wing). A geneticist, T. H. Morgan, when mating Drosophila of genotype BbV v with Drosophila of genotype bbvv, observed that 42% of the offspring were BbV v, 41% were bbvv, 9% were Bbvv, and 8% were bbV v. Based on these results, should we expect that the body color and wild-type genes of Drosophila are on different chromosomes (that is, are unlinked and hence independent)? Why or why not?