Question

Study the pedigree chart of a family showing the inheritance pattern of a certain disorder. Select the option that correctly identifies the nature of the trait depicted in the pedigree chart: 
 

• A. Dominant X-linked
• B. Recessive X-linked
• C. Autosomal dominant
• D. Autosomal recessive

Hint:

Autosomal recessive traits affect both genders equally and typically skip generations, requiring both parents to be carriers for an offspring to be affected.

Answer 1

The Correct Option is D

Step 1: Identifying the pattern of inheritance. - The disorder skips generations, indicating recessive inheritance. - Equal likelihood of inheritance for males and females suggests autosomal inheritance.
Step 2: Analyzing the pedigree. - Affected individuals have unaffected carrier parents, confirming an autosomal recessive trait. - The absence of predominant male affectation rules out X-linked recessive inheritance.