Question

In the following human pedigree, the filled symbols represent the affected individuals. 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

The given pedigree shows the autosomal recessive disorder.
In this disorder, the individual inherits two mutated genes, one from each parent.
This disorder is usually passed on by two carriers. Health is rarely affected, but the individuals have one mutated gene (recessive gene) and one normal gene (dominant gene) for the condition.
The carriers have a 25% chance of having an unaffected child with normal genes, 50% chance of having an unaffected child who is also a carrier and a 25% chance of having an affected child with recessive genes.