Question

From the following pedigree chart of a family, one can make an analysis that,

• A. It is an autosomal dominant trait
• B. It is an autosomal recessive trait
• C. It is an allosomal dominant trait
• D. It is an allosomal recessive trait

Answer 1

The correct option is B It is an autosomal recessive trait

When neither parents are affected but producing affected offspring then they must be heterozygous and hence this disorder will be autosomal recessive. Such disorder appears more frequently among the children of marriage between closely related individual. Thus, the correct answer is option A.