A male or female child of an affected mother has 50% chance of acquiring the disorder. Such a disorder is:

Explanation

An X-linked dominant disorder is a genetic condition that is caused by a mutation in a gene located on the X chromosome. Since females have two X chromosomes, they have two copies of the gene, while males have only one X chromosome and one copy of the gene.In the case of an X-linked dominant disorder:- A female with the mutated gene (Xm) has a 50% chance of passing it to each of her children (both sons and daughters).- A male with the mutated gene (Xm) will pass it to all of his daughters (who will be carriers) but none of his sons (who will not inherit the X chromosome).The 50% chance of acquiring the disorder mentioned in the question is consistent with an X-linked dominant disorder.