Figure 1 shows two phenotypes of the fruit fly (Drosophila melanogaster).
The normal (long) wing phenotype of Drosophila melanogaster is dominant to the vestigial (short) wing phenotype and is not sex-linked.
Explain how a geneticist could use a long-winged fruit fly and a vestigial-winged fruit fly to show that the long-winged allele is dominant to the vestigial-winged allele.
