Answer
A dominant X-linked allele would show up equally in males and in females since it would appear wherever at least one copy was present, unlike recessive X-linked traits which are observed more often in males due to their hemizygosity.
Work Step by Step
Review the material in Concept 15.2 on X-linkage and think about why males show these defects more often. Then consider how dominant alleles make their presence know always, whether in hemizygous males or diploid females.
