Which is a purpose for which a pedigree chart might be prepared

To determine the inheritance pattern.

Explanation:

Pedigree chart may be defined as a diagram used by the geneticists to find the family history for a particular trait. The four main types of inheritance pattern are autosomal dominant, autosomal recessive, sex linked dominant and sex linked recessive trait.

The inheritance pattern of a particular trait can easily be determined by the pedigree chart. Different symbols are used to symbolize the carrier, affected person, male and females.