Question

In the given human pedigree, the filled symbols represent an affected individual. Identify the type of given pedigree.

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

Answer 1

The correct option is D Autosomal recessive

From the given pedigree chart, following information can be interpreted:

1. The trait is occurring in both male and female individuals with an equal frequency.

2. Affected offspring are borne to healthy or unaffected parents.

3. The trait is skipping generations i.e. it is not occurring in every generation.

From this information, it is clear that this pedigree chart shows an Autosomal recessive disease.

So, the correct answer is D.