Most sex-linked disorders are caused by which of the following?

Question

Quizplus · Accepted Answer

Sex-linked disorders are caused by mutations in genes located on the sex chromosomes (X or Y). Most of the sex-linked diseases are recessive, meaning that they require two copies of the mutated gene (one on each X chromosome) to produce the disorder. Dominant genes are less common, and they only require one copy of the mutated gene to cause the condition. Maternal alcoholism and fetal alcohol syndrome are not sex-linked disorders but are instead caused by the exposure of the developing fetus to alcohol during pregnancy.

Most Sex-Linked Disorders Are Caused by Which of the Following