<unk> <unk> , sometimes referred to as X-linked<unk> e, is a mode of genetic inheritance by which a<unk>  gene is carried on the X chromosome. As an inheritance pattern, it is less common than the X-linked recessive type. In medicine,<unk>  indicates that a gene responsible for a genetic disorder is located on the X chromosome, and only one copy of the allele is sufficient to cause the disorder when inherited from a parent who has the disorder. In this case, someone who expresses an X-linked<unk>  allele will exhibit the disorder and be considered affected. X-linked<unk>  traits do not necessarily affect males more than females (unlike X-linked recessive traits). The exact pattern of inheritance varies, depending on whether the father or the mother has the trait of interest. All fathers that are affected by an X-linked<unk>  disorder will have affected daughters but not affected sons. However, if the mother is also affected then sons will have a chance of being affected, depending on whether a<unk>  or recessive X chromosome is passed on. When the son is affected, the mother will always be affected. Some X-linked<unk>  conditions are embryonic lethal in males, making them appear to only occur in females.
X-linked dominant inheritance
X-linked recessive inheritance
Extranuclear inheritance
Non-Mendelian inheritance
Structural inheritance
Sex linkage
Thrifty phenotype
Chromosomal fragile site