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, which is characteristic of recessive inheritance. - Both males and females are equally likely to inherit the trait, indicating autosomal inheritance. 
Step 2: Analyzing the pedigree. - Affected individuals have parents who are carriers but not affected themselves, confirming an autosomal recessive trait. - X-linked recessive traits would primarily affect males, which is not evident in this pedigree.