Which statement best describes features often seen with rare bleeding disorders?

Which statement best describes features often seen with rare bleeding disorders?

• A. autosomal dominant inheritance
• B. minimal bleeding outcomes
• C. commonly seen in consanguineous marriage
• D. occur in males only

Answer: (C)

Inheritance pattern is what this question targets. Many rare bleeding disorders are autosomal recessive, meaning an affected person has two copies of a mutated gene—one from each parent. Consanguineous marriages raise the chance that both parents are carriers of the same recessive mutation, so their children are more likely to inherit two defective copies and express the disorder. This makes consanguinity a common context in which these rare conditions appear. Because this pattern applies to many of the rarer coagulation factor deficiencies, the statement about being commonly seen in consanguineous marriages best fits. In contrast, autosomal dominant conditions would typically appear in every generation and not specifically point to consanguinity; minimal bleeding outcomes are not a reliable hallmark of rare bleeding disorders given their variable severity; and many rare bleeding disorders affect both sexes, not only males, so male-only occurrence is not a general descriptor.

Inheritance pattern is what this question targets. Many rare bleeding disorders are autosomal recessive, meaning an affected person has two copies of a mutated gene—one from each parent. Consanguineous marriages raise the chance that both parents are carriers of the same recessive mutation, so their children are more likely to inherit two defective copies and express the disorder. This makes consanguinity a common context in which these rare conditions appear.

Because this pattern applies to many of the rarer coagulation factor deficiencies, the statement about being commonly seen in consanguineous marriages best fits. In contrast, autosomal dominant conditions would typically appear in every generation and not specifically point to consanguinity; minimal bleeding outcomes are not a reliable hallmark of rare bleeding disorders given their variable severity; and many rare bleeding disorders affect both sexes, not only males, so male-only occurrence is not a general descriptor.