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:

In autosomal recessive inheritance, carriers are unaffected but can pass the trait to offspring if both parents are carriers.

Answer 1

The Correct Option is D

The pedigree demonstrates features consistent with autosomal recessive inheritance: The presence of skipped generations suggests a recessive mode of inheritance. Equal prevalence in males and females indicates an autosomal pattern. Affected individuals possess two copies of the recessive allele, one inherited from each parent.