X-Linked Dominant Inheritance
X-linked dominance is a mode of genetic inheritance by which a dominant gene is carried on the X-chromosome. X-linked dominant inheritance 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 the parent that has the disorder. In this, the abnormal gene dominates the gene pair.
A single X-chromosome can cause the mutation in both males and females in X-linked dominant inheritance. The affected male passes its gene to all of their daughters, but not to their sons. The pattern of X-linked dominant Inheritance is different from X-linked recessive inheritance. It is more common in females than males. All the daughters are affected by their fathers. But sons of the same father are not impacted. A heterozygous affected mother passes the trait equally to half of her sons and half of her daughters. Hypophosphatemic rickets is a rare hereditary disease and is an X-linked dominant trait. Retinitis pigmentosa and Rett syndrome are other examples of X-linked dominant traits.
X-Linked Dominant Inheritance
Sex-linked dominant inheritance is also known as X-linked dominance. Sex-linked inheritance is a type of genetic inheritance through which a dominant gene is carried on the X-chromosome. X-linked dominant inheritance is less common than X-linked recessive inheritance. Genes inherited from X-chromosomes can be dominant as well as recessive disorders. X-linked dominant disorder occurred due to genes present on the X-chromosomes.