the brown body colour of a drosophila fruit fly is dominant black body colour and is not sex linked explain how gregor mendel could have used a brown drosphilia fruit fly and a black drosphilia fruit fly to show that brown body colour is dominant to black body colour

Mendel could have crossed a true breeding (homozygous) brown fly with a true breeding (homozygous) black fly. BBx bb. The resulting offspring would all be Bb (heterozygous). If brown body color is dominant to black body color, all of these heterozygous flies would always be brown. This is because the brown allele is displayed over the black allele.